Why, of course 
I've just learnt that...I'm sure people raise their eyebrows at what I do, and maybe I privately have an opinion on what other people do, but it's no ones business except the parents of the child.
I have a very specific idea with my son. I don't want to tell him no, you can't climb that - because I don't want him to be afraid of running free and not feel the exuberance of play. I don't want to make him afraid or think he's not capable, that he'll fall. Instead I say go ahead, try, I'll catch you if you fall. It's just something that was really important to me and DH in raising our child. Consequently he's way, way more advanced movement wise in the playground and I don't say that to be boastful. He just is. A dad said to me once - I can't believe you're letting your baby climb that, that's awful, I'd never let my baby climb that.
The implication was clear - you're an irresponsible parent. It really upset me. To my core. I wanted to say to him - you don't know me, you don't know my baby, you don't know what we do or how I've cultivated this. You don't know that he's been doing this for months and he's never fallen. You don't know that's he's naturally cautious and has self preservation, that he tests out the hand holds or the weight distribution. You don't know us.
But I didn't because I was mortified at being judged. And it really brought it home to me. I don't know anyone else or the path that led them to where they are now. So I might have ideas and different opinions but I will not judge and I won't offer my opinion unless it's asked. I'd hate for anyone to feel that because of me.
Will step off soap box now :)