Mate wait until you're 38! I took me ages, same thing; nutters, loads of kids, in love with ex's or themselves etc. I found the right person eventually, just have fun and don't look to hard ;-)
I dont know whether its the same where you are but its seems like that here too. But I guess here people get partners in high school, then hey that never works then they have a bit of fun so dont want to settle down, I guess at about your age. Then when they realise its no fun anymore and want to settle down the fun that some had has resulted in baggage, kids, bad relationships etc.
I've been to New Zealand, Hawaii, USA, Canada, Mexico, Prague, Amsterdam, Majorca, Spain, Paris, Belgium, Dublin, Budapest, Malta, Crete, Kos, Corfu, and somewhere else lol