Now that's all gone with the wind all the stuff I used to do when I was single doesn't fulfill me anymore, and hence I've suddenly lost the feeling of having something to look forward to.
Oh yeah, I know that feeling. Even though my last relationship ended well over three and a half years ago and I definitely didn't dwell in a cave for all that time since then. I'd actually say I do a lot more stuff now than before (or, in fact, even with my ex-girlfriend)… visiting cities I always wanted to see (Tromsø during the polar night and Vienna, just to name a few), going to music festivals and taking hobbies like photography a bit more seriously. Some of that I do with a very good friend of mine, some of it alone.
And even though I never was the most extroverted person alive (quite the opposite, actually) and love it to, e.g., go on a walk alone and with as few people around me as possible, it's, weirdly enough, the things I do alone that sometimes make me feel very lonely. Not only that, but this feeling is always followed by the sort you described… "What's the use? What or who am I doing that
for?" Yes, that question can always be answered with "For yourself, or do you really think you matter in the big scheme of things?". I don't really want to matter "in the big scheme of things", actually.
But sometimes I feel it would really help to have someone to share your experiences, your feelings, frankly, your life with, in a way no friend could. It certainly doesn't help that basically everyone around me has a SO (at least I perceive it that way), including my very good friend. Some of them are even getting fucking married - which isn't something I would actively pursue, but it makes me feel old. Even though I'm only 26. It also doesn't help that in the last three years after my ex-gf dumped me I not only didn't find a new girlfriend, I never actually saw a chance to. I'm pretty bad at detecting if someone likes me (I could tell stories from my equivalent of High School, but I think I'd had to be seriously drunk to ramble about that in a public forum), but still, I don't think there really was any chance in the last three years. And sometimes I panic that there never ever will be, knowing my shy introverted self and such. Also, the last thing I want to be is appearing desperate. I hate that. If I find a girlfriend, okay, that'd be pretty great, but I'd never ever press the issue. I'd rather make sure I find someone I could live with the rest of my life than dating someone just because I've got a girlfriend. And yes, that attitude doesn't help, I fear.
And that's when I'm getting the feeling of looking forward to basically nothing and just letting life happen. I don't live a life where I feel I should complain about "stupid circumstances" or something like that, and I think I don't do this. It's just, that sometimes (definitely not always), I just don't care about how my life will progress. It just does, and I'll take its ups and downs with a shrug. Not that I would seriously entertain the notion of a last and final, maybe literal downfall. First of all, I always thought there are better ways to commit suicide than jumping (even though that's still better than taking the train), and second, I only think about exactly these things, i.e., the best way to commit suicide, out of some kind of morbid curiosity.
Sorry for that long rambling.
TL;DR: I definitely do have things to look forward to from time to time, but there certainly are phases in my life where I don't and I think that would change if I had a SO.