To be honest, I'm not a "night life" kind of fellow, even before I left Vancouver. For night life, Toronto and Montreal are better bets.
However, Vancouver is the best place to be for "day life" and "weekend" activities in the outdoors. There are 3 local ski hills in or adjacent to the metro area, some with night skiing. Want something more challenging than local hills, drive 90 minutes (or take the bus) to Whistler Blackcomb, consistently ranked the #1 or in the #5 ski hills in North America (rankings change by year). If you don't ski, then go snowboarding, there are other downhill winter sports. If you don't do snow sports, then you can take mountain bikes up the lifts and roll down. Its harder than it sounds. Or, you can hike the Grouse Grind. Still not challenged, roll down a mountain on a unicycle. Don't laugh, people do it. The son of one of our friends gave that up for long-boarding. It's a 1.5 to 2 meter skateboard that you lie on your back on, and you zip down the steepest roads you can find. Its not unusual to go 60 or 80 kph.
Don't do wheels or skis and boards, then that whole area is full of hiking trails. This isn't urban hiking, this is tough wilderness hiking. The North Shore (North Vancouver and West Vancouver - the area on the north side of the harbour) has the best volunteer rescue unit in North America 'cause they get so much practice. People will think because they took a city bus to the trail-head it is a stroll. They get lost, break a leg, get caught in bad weather, all within sight of a major city. Sometimes they die, so be prepared if you hike. It took something like 40 or 50 years to find a commercial passenger plane that had crashed way back when sophisticated search technology that didn't exist. When it was found, the hiker used their cell phone to call it in. The North Shore mountains are that rugged.
Mountain climbing is obviously an option. Lots of mountains. Glacier climbing too. Best known area is Mount Baker in Washington state, if your visa allows you to cross the border.
Don't hike? You can sail all year round. Summer is actually the worst time to sail due to lack of winds. Golf - well, I've never seen the allure but perhaps you do. Camping is popular. A bunch of drunk Germans or Canadians can have a lot of fun around the campfire. Watch out for bears, cougars, and other wildlife. There are populations of wild bear and cougar within the metro area, so you can imagine what you may meet when you camp outside the metro areas. This can be a year 'round activity. Snow camping is popular too. Kayaking is right outside your door, or you can drive a few hours and kayak in nearly pristine wilderness. You can take public transportation to some of these wilderness kayak put-ins. Its not unusual for kayakers to be checked out by whales. Depending on season and location, humpback, grey, or orca (killer whale).
A days drive puts you in Tofino, near Long Beach National Park, the best surfing in Canada. OK, it doesn't really rank with Hawaii or California - but its still surfing.
The province encompasses all the global climatic zones, except for Saharan desert and High Arctic. In other words, if you want to experience desert head east to Ossoyos - it is in the Mojave desert. You want sub-arctic tundra, head north and up a mountain. Vancouver is in a temperate rain-forest already, but head to Prince Rupert for real rain or back to Tofino. Want to know what a hurricane feels like? Be in Tofino during one of the winter storms. It is common for the storms to blow up to hurricane strength winds in the winter. They aren't called hurricanes because of the structure of the storm, though. Heck, a couple of years ago a hurricane strength storm blew through Vancouver - that's why so many trees are missing in Vancouver.
Salmon fishing is popular (in season). Either salt water at the mouth's of the rivers in the harbour or just standing on the river bank. There are some serious regulations, though - so get a license and understand the rules. Tourists will spend a $1000 or more to fly to remote areas to fish for Salmon. You can rent a small boat at Granville Island for a $100, fish a river mouth, and be home for dinner to cook and eat it.
If you know how to sail you can rent a sail boat with 2, 3, 4 or more people and explore the Gulf Islands - an archipelago of islands between Vancouver Island and the mainland. During a long weekend you can sail out, anchor in quiet uninhabited coves, or anchor in one of populated harbours. Every good harbour has a pub which you can reach with the dinghy.
Get outside when you can, and you may never miss the night life.
Biking trails wind through Vancouver, so its no wonder you see so many bikers and roller-bladers. Best beach in the summer is Kits Beach. Trust me on that one. If you are a clothing optional kind of guy, look up Wreak beach.
), you probably have read that I am moving to Vancouver later this month for school (so for at least 2 - 3 years). 
