I added the edit at the end of the OP specifically to avoid this thread being made. Although I appreciate people trying to help. I don't really want advice at this point. I just wanted to know if this issue was present in a significant portion of the female population in their 20s/30s. I posted this in the man hate thread because I didn't want sympathy. I just wanted a question answered.
Out of curiosity, why don't you want advice? The obvious advice is, of course, find things to enjoy - for yourself, for your quality of life, for your health, for your brain - even putting aside that it's a good idea in terms of interpersonal interactions.
And I'm also curious - when you envision a quality, long-term relationship (I'm assuming, based on tone, that's the kind of thing you're looking for/correct me if wrong!), what do you see it looking like? Do you want someone who doesn't have any interests? What does life look like?
I'm not in your age band and don't know many people irl in that particular range well, but I do know folks in the next younger age range (and folks in 40s/50s), and they all have things they enjoy. For some it's niche solo hobbies/interests they pour a lot of time/effort/money into (collectible, meticulous construction of miniature scale model muscle cars, for example, or belonging to a touring medieval music quartet, constructing crossword puzzles, spreadsheet-level wine collecting, cultivating rare radishes, road trips to alleged secret society markers, etc.*- like I said, niche and semi-intense), whereas for others it's pretty basic/plain vanilla enjoyment of a variety of things (reading, baking, working out, seeing music/shows, travel, movies, football, flying, running, meditation, tennis (or fucking pickleball), gardening, hiking, whatever). I can't think of anyone I know who is the least bit happy or you'd think to recommend as a potential date who doesn't have any interests or even casual hobbies/things they like to do.
*all but one of those are real things that people I know are into
Note - I am making the distinction between people in a period of high-intensity work or other obligations without much time or ability to enjoy or take up a hobby/interest vs people who just aren't interested in anything. And I guess also between people in a current lull where things may be of little interest vs people who just don't have a spark for anything/don't care to.
I mean, I can relate in the sense that I don't think "femoids" would respond positively to any of my interests. I always thought acting boring would work out better for me.
It's not about having hobbies that will attract people, but about being a person with some depth and texture. Life is so much more fun when you have things you care about and that bring you joy and purpose. And back to interpersonal - if you want to know interesting people, be an interesting person.
But why tho?