Well I don't disagree, even if everybody else does. I've long been a user of Araxis Merge, which is not only visual, but also lets you edit the diffs as you go, which comes in super handy for all the reasons that you state.

I didn't realise how spoiled I was until I started using git, and found the hard way how limiting the text diff format can be. Column-oriented changes in particular are very difficult to figure out, and even for more readable sets of changes I always found it a bit hard to get a rough idea of how spread out or clustered together the changes are. git gui and SourceTree try their best to help, but ultimately they're just displaying a prettified version of the same sometimes-unhelpful view of things.

On the other hand, if you're making small changes to a lot of files, a text diff is just the thing. It would be hyperbole to state that there's nothing worse than telling Araxis Merge to do a folder compare and find out that 1,000+ files have had 1 line changed in them - but it is rather annoying, and very time-consuming to investigate thoroughly. You need a text diff for that sort of thing.

But I still always reach for Araxis first...