OP I feel for you because you are obviously tired and bogged down in the mire that is raising children.
From your posts, there’s a couple of things that give the impression you give into your children for an easier life. But the thing is...it’s not going to help them in the long run.
Your toddler that doesn’t like walking...you and your DH need to go through the annoying whinging and whining to get them to a point where they can walk or scoot with some level of endurance. We all have to go through it as parents - it’s crap but it’s for their own good.
Your DD stopped swimming because she kicked up a fuss...but the thing is, it was regular exercise for her and necessary. If you want her to go, she goes. It’s for her own good. and as parents, we put up with the whinging because we do what’s best for our children.
Im not meaning to be competitive to make you feel shit - but my 2.5 year old walked/ scooted a round trip of a three miles twice a day for the school run of my older children. We didn’t have a car so I had no choice but to cajole/ encourage and ignore the whinging (I had a baby in a buggy). it does sound like you’ve opted out of doing some of the hard things because you’re so bogged down and it’s underatab how easy it is to let things slip.
But you have to be the change you wish to see in your children. I would love to spend weekends sitting down or napping. But I can’t! I have three young DC so I am out four or five hour every weekend scooting/ playing/ walking with them.
It’s hard and it’s shit at times and sometimes I wish I didn’t have to. But my kids are the strongest/ healthiest/ happiest I can make them because I put that effort in. I sound unbearably smug but there’s really no way not to - I’m just pointing out the very obvious!
Do try to see that what we do with ourselves should not always be mirrored with what’s best for our children.