I see what you mean. Some people might be able to use these devices to push them a bit further without feeling pressured, or maybe they like them purely out of interest for data.

I'm not like that. I don't want to know my daily heartrate, I don't care about my sleepcycle and I don't need to know how many steps I take daily. I'm healthy since my body says so. I feel it. I don't need numbers to prove it for me, you know what I mean? I think society as a whole is drifting away from their own emotions too much and it feels like we're more comfortable to trust a device to tell us we're fine than we trust our own body and mind.

Perhaps that's a bit of an exaggeration, but you get my point I guess :).