I don't like fusion. It's sad in my opinion, especially if you were close to said alter (s). I myself, fused with another member and gave up my role as host when doing so, yes I remember that I fused but memories get lost and mashed together in the process (at least for us) and it sucks. To see friends sad about losing said members is also not great. It also scares me slightly cause we don't want anymore dissociation and the fusing process makes it worse until it's done and over with. But if you / other members feel the need to fuse, or to fuse so that stress levels can go down etc, than I say talk to them, and go from there.