There are some ICO is still worth it but mostly not and even it can bring you good profit is still have risk. Especially nowadays that there are lot new coming ICO and I think most of them are scam. So its better to pick the best one, or make a research about it first before you invest to it, so you will avoid scam ICO. Just be aware and if you have doubt to it then stop, find another ICO that can bring good profit to you or choose wisely.