I do not think that Eliezer's techno-utopia is more desirable than simply humanity continuing to develop on its own at a natural pace.

What is the natural pace? Under what definition is there some level of technological development that is natural and some level that is not?

I do not fear death of old age, nor do I desire immortality or uploads.

Do you want to live tomorrow? Do you think you'll want to live the day after tomorrow? If there were a pill that would add five years on average to your lifespan and those would be five good years would you take it?

Good thing at least some people here are willing to think critically.

Unfortunately, saying that people are thinking critically about the SIAI is not the same thing as you seem to be doing. The OP and others in this thread have listed explicit concerns and issues about why they don't necessarily buy into the SIAI's claims. Your post seems much closer to simply listing a long set of conclusions and personal attitudes. That's not critical thinking.