YES. I think that is an awesome major. This is really the first time in human history when we can actually begin to study the age old question "are we alone?" The next few decades are when discoveries are likely to occur, so now would be a good time to start studying in the field.
I know NASA wants to send probes to check the moons of Jupiter for life, plus the extraordinary amount of exo-planets discovered in the last two years holds lots of possibilities for life.
I am studying Climatology and I find it incredibly interesting. Science is really rewarding to study if you have an interest in it.
plus, Carl Sagan would want you to do it.