we can't deny the fact that there are really ICO's whose intention is to scam people of their hard earned money.
But we cannot generalize all of the coin.
There are still those who are legitimate.
To invest in ICO you should at least find out what level of work for the project has already been completed and restrict yourself from ICO which only have a whitepaper but no any work mentioned in that whitepaper done.
I have read a few whitepapers and research upcoming ICOs and there is one who really caught my attention. Most of Bitcoin and cryptocurrencies have nothing behind them but Propthereum.io are an asset back cryptocurrency with potentially great coin appreciation. Definitely one you should check out for!