I haven't flown yet, but intend to next summer and have been practicing building on some Guillows kits. Some say that after all the work you've put into building your model, you'll be a bit apprehensive about crashing it, but from my experience, the first one you build will not be the most beautifully done anyway. You'll have a good reason to build another plane after the abuse your first has taken and when you build your next ones, you'll be more proud of them because you'll have done a better job.

So if you're going to be a builder of planes, I'd jump in now and start having fun.