In my 20's when i had no partner, i spent so much time working on my employer related stuff, these include learning new technologies, building tools in the off

In my 20's when i had no partner, i spent so much time working on my employer related stuff, these include learning new technologies, building tools in the off hours to make everyone at my company more productive, being generally driven and passionate etc... Now that i'm in my 30's, the feeling that most of my work is just meaningless drivel to get some arbitrary bottom line up is just overwhelming.