Many believe that if it's allowed to be commercially available it's only because the NSA has already developed a means to crack it. AFAIK, the only technology which is uncrackable given our current understanding of mathematics and the laws of physics is Quantum encryption. I would agree that your 63 bit password WPA is sufficiently safe for the typical user. In general, the goal is to keep the cost of cracking the system above any potential benefit to the cracker.