There is nothing wrong with thinking something through before jumping in with both feet.
Having children changes who you are and how you see the world forever. They look at you and your heart melts and breaks at the same time. You wonder what you did to deserve this unconditional love and how you will ever earn it.
My son loves comics, my daughter loves reading and enjoys comics BUT they sleep on them, step on them, colour in them etc. SO any valuable books put them away, far away for they will get ruined.
If you, your wife, your marriage and your financial position are STRONG - it is the perfect time to start a family (if there is such a thing) for having children demands no less !