There are three times I'll use a finger:
- I only need to tap one or two things, too lazy to get out the stylus
- The stylus is lost and I can't find a suitable stand-in nearby
- I'm playing MH on an old 3DS and have to use the touchscreen for camera control
Other than that it's always stylus for me. No screen grime, more precise, easier to hold, covers up the screen less... I have no inclination to use fingers other than for convenience. Playing a shooter with thumb on touchscreen sounds horrifying to me lmao, though I'm curious enough to try it.
What FPS games have you been playing? I haven't tried any besides Metroid. The only other first person game I've played on DS is Fighting Fantasy but that's more melee and RPG focused.
I can't say I've ever thought about it one way or another, but I don't really feel physically exhausted or sore after housework, so I guess I wouldn't consider it exercise? For me at least, I don't mean to say anyone is wrong for thinking otherwise.
I dunno, I sweep, mop, clean the bathroom, do the dishes, all the normal housework stuff - it's definitely more strenuous than not doing anything, but in my mind there's a place between sitting and exercise which is where housework kinda falls. Though the linked article also includes some yardwork like raking, weeding and mowing the lawn, which definitely feel more like exercise to me.