Ode to the sling

Isaac is nearly 20 months old and I still use the mei tai carrier A LOT! I don't know how people manage without. How do other children go to sleep? How do they have a nap? With Reuben we followed the silly rule of putting him in a cot awake and of course he was awake for ages in the silly cot! So the time wasted going up and down the stairs to check on him would've been better spent with him on my back and with me getting on with whatever I had to do.
Not to mention going out with a very lively nearly 4 year old, I tried taking the double buggy a few times but what to do when Reuben runs off to play with something, then decides he wants to go somewhere completely different, then decides he wants to go down the slide with me and Isaac, and so on... I found myself racing after him with a very bulky pushchair and felt rather silly. So now we just use the buggy if we're going down to London or taking a plane or something like that.