It's true that they're riskier than Bitcoin. We hold Bitcoin and invest some if you want to but you have no idea if they're going to make it when the bull run is in.
Bitcoin is more appropriate for most and that's why if you ever want to have a safe and secured investment, Bitcoin is the choice.
I do not believe in holding any altcoins, they are not not meant for holding just for a quick profit. In order to gain profits from altcoin you just have to buy at there first stage of presales or private sales and sell immediately or few days of the listing, if not the price will automatically dump leaving you with little or non of your capital. The earlier you sell your altcoins the better your chance of making good profits.
Where else, Bitcoin can be bought at any time and any price because it will definitely not run into loss forgetting the volatile nature price must surely bounce back and give good profits to Bitcoin owners only for those who is in for the long run