I've never really liked kids but knew I'd always want them at some stage.
DH always said he would wait until he was ready to have kids before he proposed. He's quite traditional like that.
So after 7 years together we got engaged, married 1 year later, off the pill after our honeymoon and 2 months later UTD. I felt ready then and was very excited to have a baby - I had NO idea what was ahead of me - NONE!
Then I became a mother and realised I wasn't ready. I don't think I'll ever be 'ready' but I'm doing it now because I have to.
When DD was in that lovely 14-24 month old age we thought we would go for number 2 - really just to give her a sibling - not a true desire for another or being ready. At that stage I had no idea how bad terrible 2's, threenager and f*ing fours would be, but I was UTD with #2 before that all happened.
We are both happy to stop at 2. Get this awful pre-school phase out of the way and hopefully things get better.
You'll never truly know if you *are* ready, you may never truly ever *be* ready, but my best advice is research what it takes to have kids, read through the parenting sections of Bub Hub. Find a friend or family member with children and spend a few days with them, read some parenting books (What to expect the firs year is a good one). Try as much as you can to understand what life as a parent is really like.
Make sure you've achieved all (or most) of what you set out to achieve in life before embarking on becoming a parent.