Why not just substitute donations to the Singularity Institute?

Because given my current educational background I am not able to judge the following claims (among others) and therefore perceive it as unreasonable to put all my eggs in one basket:

• Superhuman Artificial Intelligence (the runaway kind, i.e. God-like and unbeatable not just at Chess or Go.)
• Advanced real-world molecular nanotechnology (the grey goo kind the above could use to mess things up.)
• The likelihood of exponential growth versus a slow development over many centuries.
• That it is worth it to spend most on a future whose likelihood I cannot judge.
• That Eliezer Yudkowsky (SIAI) is the right and only person who should be working to soften the above.

What do you expect me to do? Just believe you? Like I believed so much in the past which made sense but turned out to be wrong? And besides, my psychic condition wouldn't allow me to devote all my resource to the SIAI without ever going to movies or the like. The thought makes me reluctant to give anything at all.

ETA

Do you have an explanation for the circumstance that you are the only semi-popular person who has figured all this out? The only person who's aware of something that might shatter the utility of the universe, if not multiverse? Why is it that people like Vernor Vinge, Charles Stross or Ray Kurzweil are not running amok using all their influence to convince people of the risks ahead, or at least give all they have to the SIAI?

I'm talking to quite a few educated people outside this community. They are not, as some assert, irrational nerds who doubt all this for no particular reason. Rather they tell me that there are too many open questions to worry about the possibilities depicted on this site rather than other near-term risks that might very well wipe us out.

Why aren't Eric Drexler, Gary Drescher or other AI researches like Marvin Minsky worried to the extent that they signal their support for your movement?