It dosen’t even need to be that badly damaged, you just need to drop it once and get one lens element inside to tilt or decenter, making the lens completely useless for pro work.
Not many want to get Nikon/Canon to fix an older lens, as it’s quite expensive to do so.
The most important part must be if you’ll ending up using it more, not if it delivers a reduced image quality, what good is a sharp lens if it just stays at home and collect dust. Sometimes portability is more important than image quality if it means you’ll actually use it. in this scenario you would need two potential more heavy lenses instead of one to cover the same range. And although these in theory would give better image quality and flexibility it comes at costs, it doesn’t sound to me that you’re willingly to pay that price.
Not many want to get Nikon/Canon to fix an older lens, as it’s quite expensive to do so.
The most important part must be if you’ll ending up using it more, not if it delivers a reduced image quality, what good is a sharp lens if it just stays at home and collect dust. Sometimes portability is more important than image quality if it means you’ll actually use it. in this scenario you would need two potential more heavy lenses instead of one to cover the same range. And although these in theory would give better image quality and flexibility it comes at costs, it doesn’t sound to me that you’re willingly to pay that price.