I wanted children and ended up having a baby at 28 with a wildly unsuitable man. He isn't involved though some members of his family have some contact. When DP and I got together he didn't care I had a child and is now for all intents and purposes his dad.
I don't regret DS for a second, even now as a disobedient toddler who drives me insane. I actually envy your position. I'd rather an anonymous stranger helped me become a parent than the tool that did as he could pop back into his life should he decide on a whim.
I'm a big believer in two parent families and think that 33 is quite young to be setting it in motion, though not for investigating the options. You, of course, know your life and situation better than anyone and if you think your chances of meeting someone are slim and the time is right, go for it and bugger everyone else.
Do make sure you have someone to give you some respite, even the most lovely children drain you, peppa pig becomes the highlight of your day, your DC will use you as their personal climbing frame/seat/chef/horse etc. I have never turned down an invitation for a family member to take him out for the day!
Children expand your social circle, possibly opening up new romantic avenues. DP has a DD and we don't think we'd of got together if it wasn't for the calming effect of becoming a parent.
That's my only recommendation really, same as to all single parents, make sure you have adult time, else you'll go nuts :)