When to go from cot to bed?

[bramblina]

What did you do and what did you find the best? Ds is 15 months and I'm not considering it just yet but was wondering.

As late as possible ! When dd could climb out of her cot we just took the dropside off until she found the size uncomfortable. ds never did so moved into a proper bed at 2 1/4 ish.

Ds would have stayed in there until he was 16, if I'd had my way, but at just over 2 and a half he realised he could climb out. We then took one side off, and he can stay like that for a good while yet (but it is a cot bed, so quite long).

We are just moving ds out of his (dropsided) cot at 3.10 months!
We were/are firmly of the belief that if it ain't broke, don't fix it!

Ds's is a cotbed so I don't think I worded my question very well, I'm meaning more along the lines of when you took the side off as opposed to length related questions! A friend tolf me she and her sister put their dc in to a bed at 18 months and none of the children noticed, therefore they didn't make a big thing of it, IYSWIM. As I sadi ds isn't ready for that, but I just wondered had anyone experienced leaving it so late it actually became more of a problem, and the child kind of went OTT about it? Oh think I need to go now...

(don't seem to make sense tonight, someone has just pointed out on another thread I had mentioned dh and I were aiming for a 22 year age gap between children. Still laughing...)