I had hoped to start TTC when DS was around the same age, but as I didn't get AF back til his first birthday it was somewhat out of my hands! I really want my kids close too, I thought they could play together and while I'm used to interrupted nights and nappies I may as well continue with it lol.
At the end of the day it's YOUR choice. If that's what you and your DH want to do, don't worry about anyone else