Thoughts on Sharing?

I was on a thread last night about a little boy who had a new bike, and a little girl asked to use it. She asked the boys grandma and the mom cut in and said "why dont you ask little boy if you can use it" boy said no. Girl was disappointed but ok. It got me really thinking about sharing. Why do we teach kids to share their stuff? Is it really a skill they need to learn, since adults aren't expected to share their things with each other? I'm just interested in everyones pov on sharing, in general.The way I go about sharing with my son, is I don't make him share his toys. If we go somewhere, like the library or a park, and he brings a couple toys, I will not force him to let other kids use the toys. If he invites a kid over to have a playdate, I will tell him ahead of time to put the toys he doesn't want to share away. If it's community property like at a daycare or toys that belong to the library, I will make him share, but I use it to teach him patience and taking turns. I will not immediately make him give the toy up. I will tell him he has to take turns and say, 5 more minutes and then its the other kids turn. Or something like that.However, my son is actually really good about sharing, on his own. When he has a new toy, he will try to get other kids to play with it because he thinks it's so cool. Occasionally he has said no, but for the most part, he shares because he wants to. Not because he is forced to. Imo, forced sharing is unfair and causes anger and resentment. Thoughts? via /r/Parenting https://ift.tt/2XBp3PX