I'd have to agree, I found them boring too, but only as boring as I've found most of the other stuff like GCSEs. I dunno what you mean by limited wither; do you mean unchallenging or unenjoyable or what?
The only difference I can see between A levels and uni is you get to do what you want in uni but you have to do what unis want in A levels. I guess from that respect, uni can be more interesting/less boring simply because it's more along your interest.