My prefered kit is that of a sniper but I can tell you, without a doubt, it's not for everyone. I can go whole games without even firing a shot but still having fun. Some games I spent the whole time crawling to get into a great spot only to have the game end but was pleased with the fact that I was able to get as far as I did without being killed. If that sounds like fun for you then by all means become a sniper.
However, you need to take the local sniper certification course first or you won't even get to play (and yes all of the fields in the Lower Mainland of BC require the course).