What about like easy day hikes on 70 degree days?

Meh at best. Even in ideal conditions say, skiing in the Alps on a -5C sunny day feels like a bit of a chore. When I'm out there I sorta, kinda can convince myself that I like doing it but the chore of getting the gear packed, lining up for lift tickets, changing into the clumsy gear and all that other ceremony makes it on balance, not worth it. Same goes for all other outdoorsy stuff.