My photography is either still life stuff - where obviously it doesn't matter at all - or it's landscape/wildlife stuff. In the latter case having location info in the metadata is very useful for me in grouping & categorising shots and also if I want to go back to a particular place to take another batch - it's all very well saying 'just go back to the same place' but when you've spent a day hiking round say Glencoe or the like, it's a bit easier to be able to go direct to the spot rather than have to retrace your whole path until you find it. This is especially true if you want to take shots with the light at a different angle i.e. a different time of day.
It's not a feature I'd consider a must have on
every camera but for the photography I do, it's proved it's usefulness.