Yes, it is a matter of personal preference.

However, I find that busses tend to make the schematic more "busy" and thereby make it harder to read. If the busses were labelled properly, i.e. contained the names of all the signals on them, it would help, though. Having yet another fat line running around the sheet doesn't inherently contribute any information.

The "FIND" (net-sniffer) command in most schematic editors allows you to verify that the signals go where they should and are not misspelled. If they are misspelled, attaching them to a fat line doesn't fix anything, and most schematic editors don't even complain when you do that.

My preference is to leave out whatever I can. That way there's room for what's essential.

RE