I've worked at Wings Over the Rockies a bit, and they have an old F4. It's not good looking/elegant. It just looks like a bunch of giant metal cylinders welded onto each other that holds a lot of very explosive liquid with mounting points to put smaller cylinders on with more explosives. I get that the status quo has marketed fighter jets as sexy, but they just are there to do a job and that job is to kill.
I agree regarding the older jets like F-4. But e.g. F-15, F-22, MiG-29 or B-2/21 look great. Interestingly, the newer F-35 less so (it's a bit "chunky").