It's not so much an active dislike as it is just not my cup of tea.

I've visited Spain a few times and it's nice in short bursts, but to live there I would have to deal with the weather (not everyone likes hot and sunny, I'd honestly prefer Norway's weather to Spain), the piss-poor developer salaries, the struggling economy, the food that I really am not a fan of, the poor quality of healthcare, the remnants of pro-Franco fascism in their political landscape etc.

It's just not for me. I think I'm more suited to Germanic/Nordic countries for culture.