There's PLENTY of ways to enjoy sex without having children! If you're ok with hormones/drugs/western medicine you've got options like birth control pills/patches/shots, IUD's, you could even have your tubes tied or he could get a visectomy (sp?) if you KNOW you don't want children (although they ARE reversable). If you're like me and you don't like any of the above options, look into Fertility Awareness. This is NOT the rhythym method by the way and it is also NOT a form of contraception! What it is is learning your body's personal signs that tell you "I'm fertile now" and either abstaining from sex during that time or using a condom. My best friend has been pregnant free for 5+ years and I'm entering my 2nd year... I would NEVER go back to anything else!
If you're interested check out the book "Taking Charge of Your Fertility" by Toni Weschler!