I don't want to get married

I'm engaged (have been for 2 years so far). I'm happy with that. Sad thing is, I don't want to get married. A few reasons being; all him and his mates are looking forward to is a stag do (bachelor party), his family will take over, the kids in his family (niece, nephew and son) are massively rude and are attention seekers who will throw strops if the day isn't about them, due to his job and the fact that I hardly see him it's putting a strain on our relationship (especially sexually), and we can't really afford it. Not even a cheap one at the moment. Has anyone else been through this and had the same feelings?