Keep my RTX 3070 or no?

Some background:
My current pc that I’ve had for 6 years now has been failing me, it’s pretty much unusable at this point. I also can’t upgrade to windows 11 so I think it’s about time to get something new.

I upgraded my pc a couple years ago to a refurbished RTX 3070 and increased my ram to 32 gb ddr4 before the prices went up.

My original plan was to keep my gpu and upgrade everything else to save a few hundred bucks, but now I’m wondering if I should just bite the bullet and get an entirely new PC for better future-proofing, but I don’t want to spend more than $1500.

I play games on it but I also use Davinci Resolve for video editing which can get fairly demanding with bigger projects and larger video files, so I don’t know how long my 3070 will last me before I have to upgrade.