Comment by quicklyfrozen

For me, using a GUI makes it much less likely I'll commit the wrong changes as I can quickly review each staged file across the entire tree before committing, and also see if there are unstaged changes (including new files which was often the bane of an SVN workflow) which need to be included.

I typically use git gui to commit changes, the cli for other operations, and occasionally source tree to visualize branches and compare with remote repos.