Well it's becoming clear that People either like them, or hate them.
My view would be that if your going to be doing a reasonable amount of multi/Flash/Strobe work, in particular in a Studio situation where you need to balance light between strobes, you probably could use the help.
As Paulwalnut mentioned, if you appreciate the difference between "incident" and "reflective" light, then you may well find that metering for "incident" light could help your Photography.
It would help just to look on the internet & research the use of meters, there's a tonne of useful, and useless info out there, then look for a meter that you feel will fill the slot for yourself.
I have a couple, the Sekonic L-758DR, which has a 1 degree spot reading ability, and the Sekonic L-478DR which has a 5 degree spot reading ability, but is smaller and touch screen.
Do you "need" a meter ?? No, the metering done in most newer Cameras does a pretty good job, to a degree, if you want to be able to balance the exposure better, then a meter is a tool that can help but not replace your Camera meter & Histogram.
Do I use my meters a lot, not really, but I'm an unapologetic "gear" nut, plus I work on the principal, better to have it & not need it, than to need it and not have it. I generally do take at least 1 of the meters with me wherever I go on a trip for Photography, due to the view mentioned, and I'll often find that the meter does get used and has helped with difficult exposure set ups, Snow, Sunrise/sunset, fill flash etc.
Wish you luck in your decision making.