I use tying for the charity quilts I give away because I can enlist everyone's help. Children can help tie and we can do several in one evening. They last very well, though by using a certain kind of thread, we struggle when the ties want to come out so now I use crochet cotton.
I think of them more as comforters and not quilts.
I prefer machine quilting on things that I really call "quilts". But, I have to use much thinner batting if I machine quilt it. Tying means I can have a puffy comforter which will actually be much warmer. I can double the thickness of the batting with tying. (100 gram is about the thickest I think for machine quilting, but 200 gram makes a super nice, warm, puffy comforter.)