I've moved more and more to what you've been saying on this topic since you've started saying it. At first I thought you were silly to stop as I was really just getting started, but around six months ago things really begun to change, and now often times I do not even get on my bike. I really only use it casually to the store, hell I even bought insurance for it simply to get a good payout if it gets stolen, and I wouldn't mind one bit to be honest.
I used to try to get the best of the best, mostly to spread the vegan word through show, and it did show me just how far you can push yourself. When I stopped my run I always felt like I was literally dying, I'd have a huge heat-wave, get wobbly, and essentially lose my mind for a few minutes, but only when I stopped, so I had to keep going to prevent that.
Far rides on the bike, good runs, and even a swim is good fun and enjoyable, and makes you feel good, but it's not as deeply satisfying as making a difference directly. I'd much rather go traveling around, creating content, helping families out and enjoying the simple relaxing things, be it walking around with a lad, hiking casually, or going and being silly with some kids.
Grinding away training simply doesn't compare, build the memories, and make you absolutely adore life and think WOW every single day, damn how happy am I.