It's not as good as people make it out to be, to be completely honest.
When I've 'engaged' in a French kiss, I've found that my mouth gets way too dry and it annoys the hell out of me, so I don't tend to enjoy it that much.
Hugs & Normal Kisses are what I tend to enjoy more, as they feel more 'loving' than a sexually orientated game of tonsil hockey.
If you don't wish to do the whole French Kiss thing, explain to your partner how you feel about it, if they truly care about you, they should understand.
But hey, don't knock it till you try it
Good luck.