Thank you for your kind response, Gingerbreadman
It's sad for you too that you know what I'm feeling, but at the same time it is kind of comforting.
I really do appreciate the advise you gave, but well, as you know, sometimes it's just so hard. And there are times that I ask myself why I'm still doing it. I know that it is ridiculous, if you don't try you will never succeed. But still. From time to time it just doesn't seem worth all the trouble, headache and heartache.
And another problem is that the people around me just don't seem to get that it's difficult for me. They just keep saying things like: "come on, surely you will find someone" or "surely it isn't *that* bad" but they never seem to really know how it must be like. That's also quite frustrating; maybe you had the same experience?
Oh and I really do try to keep positive, but well, sometimes when you're feeling down and there's no-one who really understands you things only get worse. At this moment it also feels like I'm in this downwards spiral and I have trouble getting out. Surely, I still do fun things with friends and I really enjoy doing that. But when I get back home and I'm all alone these feelings start coming back...
It's just that it keeps getting more difficult to keep that glass-half-full attitude that I've always had my whole life. Maybe it's also because of a lack of self-confidence. I'm not sure. Probably that's also a part of it...
And maybe you're right, maybe it all is one step closer to find someone amazing. But what's it all worth if I continue like this and finally meet someone when I'm like 86

OK, I know, that's over-dramatic. But it's really a big fear of me to end up all alone.
Anyway, I'm still grateful for you response, thanks a lot and I will really keep it in mind. Like I said: it's good to know that I'm not alone.