I can relate to that. I don't like those WIP commits on a feature branch (when the program is crippled or even doesn't compile or doesn't pass the tests, when the code is filled with temporary "printf" debug messages, etc.) to be in the history of the master branch.

Ideally, every commit that I'm making should be preferably not big, but logically complete and working. The problem is that sometimes I want to work on another branch and I have to commit in the middle of the work so I can checkout into the other branch in which case (without a squashing merge) the "offending" WIP commit would end up in the master branch's history.