She always acted like she hated being the slayer because it got in the way of her socialising.
I never saw it like that , I mean yes she wanted time for friends and dating but that wasn't because her ego was huge but because she wanted to be
normal and 'care-free' like the other teenagers around her (speaking of greener grass, [MENTION=10352]Chosen Enemy[/MENTION]
😉) and because being "THE" Slayer would have been a terrible burden on
any young girl.
She needed a social life, doesn't make her stuck up or selfish, it makes her human.
She didn't ever seem forfilled that she was saving people lives and making the world a better place. It was likeshe didn't care about the people she helped, she cared about being a 'good slayer'. It always revolved around her.
To be fair, most people (if not to sayall) see the world through their own perspective where they are the focal point. You will always find a certain self-centered focus and in some people sure, that may get out of hand, I'd have to say that I didn't see that in Buffy. Buffy's focus on herself and her neediness to focus on her own issues I saw as an extreme reaction to the fact that she wasn't her own person. She wasn't just Buffy, she was 'the' Slayer, someone with a higher calling, for a long time under the thumb of the Watcher's council... and she never ever, got a break from that... no wonder she grew fiercely protective of who she was as a person (non-slayer traits) and non-slayer activities (which after all kept her out of normal life and in the dark with demons. She was more than a little jealous of her friends who could chose to walk away and who didn't have the weight of the world on their shoulders)
As for not caring I think you're so wrong her. She was reluctant at first, she wasn't always in love with the gig, but it wasn't because she didn't
care about people. If anything I think she cared too much - imagine being a teenager, with all that that entails, and to know that you're responsible for other peoples lives! It's an incredible burden to care so it doesn't surprise me in the least that she didn't seem 'fullfilled' from Apocalypse averting (if we look into hero mythology I'd say few of them are truly "fullfilled" from their good deeds)