I'm by no means a photography expert, and the pictures of my car make it look quite a bit better than it really is. I'm driving my car every day, and will continue to for many years, hopefully. With the daily driving will come flaws, there really isn't much you can do about something like that, unless you have fanatical attention to detail and a corresponding amount of time and money on your hands.
From my standpoint (and I'm betting many on this board), the mark of a true enthusiast is the willingness to drive your car often, not let it sit in a garage where it isn't doing anyone any good.
Of course, regular maintinance, both mechanical and cosmetic, will go a long way toward making sure your e30 will last. I'm sure I'm just stating the obvious here, otherwise you wouldn't even be reading this.
Just my .02 on the subject
Brian