TL;DR: Quit whining about your gear and just go work.
It helps a great deal if you actually have ever done anything that is a physical sport...
You say this like I've never done anything physical.
I'll say this: If you don't feel like you're gonna puke and die, you can go harder.
I went through a data-collecting phase myself. I wore my Garmin 410 for everything -- yoga, interval workouts, weights, bike rides, Tabatas, long jogs, fartlek runs, physical fitness tests, doing Shaun T home videos with my wife… just about every workout session when I could wear my Garmin.
After a couple years of this, I realized that the data was telling me what I already knew: if I expended more effort, my body worked harder. Oh wow, on my bike, I got 195 bpm climbing the hill by the Capitol. Great, I thought, now I have a number to attach to my pain. I didn't bother to watch my HR after that.
*yawn*
I looked at all the data I had uploaded to Garmin Connect, and I just didn't care about it anymore. The coolest thing I had done was on a jog when I spelled out a big "M-O-M" via GPS in the park on Mother's Day. What am I going to do with it now? Print it out and stick it on the refrigerator? Meh. Sure, there's a few 100km bike rides, but I only remember feeling like I wanted to get home.
If you're going to get all bent out of shape about what your gadgets can or can't do, step back and think about
why you're trying to collect the data in the first place. Is it vanity? Is it just geeking out with stats? Are you tweeting your new PB every week?
I'll partially concede that it's nice for motivating friends and family (especially under the banner of, "If he can run a 5k, maybe I can, too"), but that's if you can't get together to participate. It sure is a lot more fun to do these things together, on the same day in the same place. Get to know your neighbors and join a run club or group bike ride or something.
I get why people think they need more data. Maybe you're calculating your nutrition needs and planning what to take in your goodie bag (hint: if you're going for less than an hour, you don't need to take anything). Maybe you're checking the gearing on your bike (or maybe you just need to climb more). Maybe you're checking your exertion in the weight room (or maybe you should do more pull-ups).
I'm glad these little devices can get people off the couch. But, just HTFU and go run. Leave your electronic doodads at home for a month.