Yes... I probably use it more as time goes on, but it doesn't feel that way because using the watch throughout the day has become so second-nature.
The only time I really think about it is when I use it for something that is not routine. For example I just got back from a week+ vacation so I used the watch for travel for the first time. I had installed the Alaska Air app to my iPhone, as well as the free Flight Stats. I enabled Flight Stats as a glance so I could swipe up to see if my flight was on time and what gate it would be at. I had used the Alaska Air app to check-in, and it saved my boarding pass to the Wallet app. That caused the QR code for my boarding pass to appear on my watch as a notification as the boarding time approached. I just had to tap it on my watch so they could scan it at the gate! I thought that was cool because I didn't have to know or learn how to use that feature. It just showed up when I needed it. That's the way a seldom-used feature should work! I only use maps on occasion, but I did use maps and turn-by-turn instructions while traveling quite a bit. My rental car had a GPS in the dash, but it was not as easy to use as Maps on the iPhone and watch.
Of course my routine usage is still the core usage of notifications/reminders, text messages, time, timer, calendar, weather, grocery lists, Apple Pay and activity/workout tracking. A few months ago we bought our first smart lights (a Philips Hue kit) so now I regularly use my watch to control our lights as well.
I suppose a flip-side to this question is: Do you still use your iPhone as much now as you did before you got the Apple Watch? I do still use my iPhone quite a lot, but not nearly as frequently during the day. Since I don't need to get my iPhone out to glance at information or take care of a simple task, it spends more time tucked away.
Sean