Hi, everyone!
I became familiar with ICO world only 3 months ago, now I see how many new projects have appeared during that period.
I think the amount is enormous, so many different projects even with repeating ideas!
When do think will this rush stop and why?

That's why most of them are trash and you are right they are just copying ideas on one another which you would find out that its not really need to have lots of options on what they are offering which would turn out that they are already useless or not really needed at all. If I do see some unique projects then I might consider it and would plan to invest but for those who are just copying from another then theres no value on those coins for sure.
You cant stop it because anyone can create their own coin and launch an ICO.