For me, draft day alone was fun enough to make it worth it back in the day when it meant all getting together with our sheets and magazines, food and drink, making fun of each other, etc. Gradually, more and more people wouldn't show up but be online instead, and those that were there in person were too busy looking at their computers and entering info into spreadsheets instead of actually conversing, to the point where it didn't make sense to meet in person for it at all. Things like the Draft Dominator (while seeming great to me at the time when I used it) actually served to make the draft much less fun in the long run. And then without a live draft and the banter that goes with it, this seemed to really put a damper on the interactions that would take place throughout the season as well.
Then when you did have social interactions where FF would come up, guys in my league would invariably talk about their other leagues they were in as well (other than maybe two years where I played an extra league, I was striclty a one-league guy) and there's not much less interesting to me than listening to talk about FF leagues you're not involved in.
Whenever anyone says, "I don't have the time" they really mean, "I don't have the desire to prioritize this with my time." And it wasn't just the total amount of time you'd put in during the week, but how
often you'd have to think about it, even if for only a few minutes at a time. Waiver wire deadlines, Thursday night games, Saturday games, etc. All requiring attention when other aspects of life as you get older demand more attention and priorities change.
So I was all in for years, but now it's been years since I played. Once in a while, I
think I miss it enough to start up again, but then I hear people talk about their leagues and it all sounds so silly and uninteresting.
And it's nice to be able to watch my actual NFL team without worrying about who exactly scores for/against them, and to pay some attention to the NFL in general without caring about the name and status of the backup RB on some team I don't normally even think about.