Is anyone else mildly disappointing the Curiosity rover hasn't found any signs of past life form?

Not really, I mean, the radiation on Mars, well, we can handle for a while. But Curiosity is not searching for life that specifically, just to learn about Mars.

It's really early days, what did you expect it to be easy to find evidence of past life on Mars, like a discarded portion of a cheeseburger or something?

Scientists design the expeirments, engineers take years to build the equipment which is launched and spends one or two years gathering the data, the scientists usually then spend decades (often the rest of their careers) analysing that data coming up with hypotheses based on the new data which will then need further experimentation to verify / falsify. This is how science works - slowly and painstakingly and tentitively feeling its way towards understanding.

CURIOSITY IS NOT LOOKING FOR LIFE, OR SIGNS OF LIFE!!!! Everyone needs to learn this.

Curiosity is a a robotic geologist. None of its scientific equipment is capable of discovering life (unless it's multicellular and crawling around, which is far from being likely), get over that fact.

Curiosity will be able to learn more about the history of Mars than ever before. Data obtained by Curiosity may, eventually, suggest that Mars had the variables needed for life to arise, but not that ever did arise.

NASA plans to look for evidence of life at some point in the future, but the present missions are not looking for it. That's because everything they look for costs money, millions and millions. For now they're looking for things like evidence of past water and basic geology.

It's a bit like the program to land a man on the moon. It started with a bunch of Mercury missions, then Gemini missions, then a bunch of Apollo mission. They were all leading up to a moon landing, but they had to take things one step at a time. The first manned Mercury mission was just to get a man into space, in a suborbital trajectory . The second one was to get a man into orbit.

Not really.

Curiosity has only been there since August and will keep going as long as it remains operational (which is likely to be much longer than the originally-planned 2 years).

Give it time.

No, it would've been a long shot anyways. They're just hoping to find evidence that conditions suitable to past life may have existed.

If you were expecting it to beam back pictures of a fossilized dinosaur skeleton or something, you were bound to be disappointed.

Keeps me awake every night.