I think bitcoin is your "safest" bet, ethereum forked before...
If Ethereum has forked and is past that hurdle that has unknown consequences, and Bitcoin hasn't...how does this make Bitcoin a better investment?
Maybe you should research for yourself so that you could see the result and you must be wise aswell as be more observant since there are several downfalls happening on it. And you must join each downfall happen so that you can earn with the pumps happening.
But you shouldn't be calm that there's always profit on bitcoins since particularly many people lose their capitals for not being attaintive to there investment on bitcoins.
Ethereum is just an altcoin and i think bitcoin will be still a good choice to invest.. bitcoin is gaining more popularity and growing normally the price should be increase because the price is relaying in demand and supply so more business with bitcoin more investment and merchant are accepting bitcoin as payment .. so if you are a long term investors you will never experience of loses because the movement of the price of bitcoin is increasing year by year.. that i think you can gain more profit if you invest a lot.. and ignore what the price dump happen in bitcoin instead buy more bitcoin if you see the price dump that can increase your profit more if you buy with cheapest price.. you can be lose in bitcoin if you are not wise and smart if you heard a panic sell out there get the benefits of the price dump buy more bitcoins and gain more profit in few months or year because i believe that it can recover the price back and it can increase more. .