I agree
I totally agree with wet1. When faced with the Area 51 mystery, the only fact you have to work with is the fact of the Government's total secrecy and a few sightings of aircraft. these two basic facts can become roughly two conclusions.
(1) that aliens are being held at the base, the need for secrecy being the precept that any knowledge of aliens will cause mass hysteria amongst the public.
OR
(2) that new technonolgies are being tested there that, because of standard military policies regarding developing technologies, must be kept secret.
I'm not saying there is sufficient evidence going to either side. the fact that this base and its contents are kept classified helps only in speculating and leaves most of the doors open. The question, then, pertains to the sightings.
It's up to you whether or not you want to believe that the lights in the sky surrounding area 51 are aliens or top secret planes. But, ask yourself: What makes more sense, having US military planes flying in the vicinity of a US base, or having alien planes flying in the vicinity of one. In a case with (seemingly) so little facts, simple logic seems to be the best tool.
I'm no expert, though. I dont know much about area 51 or all pseudoscience in general. However, I do like to think on my own values and morals and be free from the traps of conformity. NEVER trust eyewitness accounts over hard facts!