No matter what you pick bitcoin will be the best for investment in any time. You can take chances with some ICO or some other alt but that can be long and painful process. Most of ICO are scams the ones that are good are hard to find or more to say hard to pick in alt you can play safe with ETH or similar.
To be honest, there are a lot of crypto currencies out there that can generate us a lot of profit but the best one out there is bitcoin. I am not bias about this, I am just stating this based on the information given in this forum, the price chart and the history. Stories are also told about this and I know a lot of people will agree on this too.
What you say is very practical, if we don't want headaches or think and analyze too much, bitcoin is really a good choice for investment, even we can say that the best is still not wrong when many people have shown that investing in bitcoin will never hurt, as long as we are patient and accumulate at low prices, profits will appear someday, it belongs to a guaranteed and long-term trend. But if we like boldness and love terrible profits for a short time, a lot of crypto allows, but we will need a lot of time to determine