so few tell me they are leaving...they just leave??

If you are talking about when people just leave on the internet it could be because the net went down ,, and they had no choice ,,, but if they just leave and do not say good bye you are correct it is just rude ,,,,

Never like it when that happens. Just rude, in my opinion.

Hate it when that happens

Goodbyes can be so hard.

Easy come easy go

I will not do that to you