Well the main reason why you should consider to invest in ICO is because it's one of the fastest way for you to earn there are  actually 4 outcomes that may happen.
1. Short term, sell it at higher price when it hit's exchange.
2. Long term, sell at very high price (If the project is successful)
3. Get scammed by them.
4. The bounty hunters sell their tokens and in result the price is down (Which always happen at the very early stage)

well investing to ICOs needs a lot of guts and trust in the project it's not fit for a short term investment since the bounty hunters are your enemies an ICO is for long term investments.