Bitcoin has been battle tested for years in the black market, an ecosystem that contains many of the best and most creative hackers in the world. In its current form, it has drawbacks - slow transaction times, high costs, no smart contracts, massive energy usage, etc. Many of these issues may be fixed with new protocols like the Lightning Network and other layers being added down the road. Not a single other coin has proven itself to actually be useful or secure.
Bitcoin is a survivor. If the hackers, speculators and volatility haven't killed it yet - nothing will.
My question is this. Do you all believe that an altcoin will wind up superior to Bitcoin or are you investing in altcoins and ICOs because the market cap is lower and there is, therefore, more room for profit?