Kids can be fun, but I have to admit I love my kid free time too.  Not everyone needs kids full time in their life.  If you are happy without the pitter patter of little feet I say leave it be.  If you decide long term you want more kids in your life, there is always big brother big sister groups, or babysitting for a friend.  Nothing like having kids that AREN'T yours around for a while to make you check the refill date on Birth Control HAHAHAHAHA