[johnsbrayton]

I do squash merges but keep the feature branches. So after determining that I made a change as part of a big pull request, I can then look at the commit/blame history for the pull request source branch if necessary.

[mvdtnz]

I'm guessing you don't work on large projects. This would create an outrageous amount of noise in a busy repository.

[matijsvzuijlen]

This means having to keep these branches around cluttering up everything, and makes git bisect a lot more complicated.