lol, yes indeed.
Laugher is not always to belittle. Sometimes it is there to appreciate.....to appreciate life, people, situations, experiences. To absorb and digest. To express appreciation of something that makes life more meaningful and less boring.
"Childish" forum posts or not really "childish," just "child-like."

Innocence and naivete are welcome. We all started from humble origins.
And also, is there not a child in all of us?

It is often nice to be able to go back to the good-old days and remember what happened to make us who we are, and laugh at what we did back then.....and possibly laugh at those who are now taking the same road, as a reflection of what we did ourselves.
It may actually be a sign that we're still the same (intrinsically). Haven't changed a bit. Ok, maybe we've learnt something and had a few wars and battles, and battle scars, but intrinsically.....the same.