It is really up to you if you want to sell half of it to invest on some altcoins. We can't just shill an altcoin to invest then blame us when you lose money from it. If you plan to buy some altcoins, you should research for it yourself and analyze if it's a really good project. Each of us has different point of view, like me personally since I like gaming, I invested on those projects so I can monitor it properly without forcing myself just because of high return.