I can't speak for anyone else, but making time for the gym has always felt like a significant commitment and even sacrifice. My gym time is typically ~2 hours,

I can't speak for anyone else, but making time for the gym has always felt like a significant commitment and even sacrifice. My gym time is typically ~2 hours, almost half of which is logistics : transportation to-from, showering, packing gym bag, etc. Of course there are theoretical means to optimize this time, but for the moment let's assume that's not an option. That's basically 12.5% of my waking day. My schedule is tight, but not as tight as some others - and yet my gym days always feel like they're getting in the way of some other potential task (work / school). I can't even imagine what a 2 hour commitment will feel like once I have children.