2: never n trust any other coin aside from Bitcoin for long-term goals, most especially the highly centralized altcoin as there are open to external influence just like centralized exchanges are also exposed to external influence.
Writing is one easy thing to do but will you put your money where your mount is? Bears give people reasons to reason like this but will they kept to their promises in the bull market when everything seems to be giving people profit. One thing about altcoins investment is that, there'll always be one better than the one you're thinking will last forever and they can just disappear from the market without much been done. Altcoins has given people some decent profits in the last years but they have done more harm to a large range of speculators as the losses are always more than those profiting.
Altcoins are best for speculations and trading, unfortunately they have become a part of the industry so if you want to get yourself involved then it should only be through trading and short term investment and not as long term investment options. Your only focus in the industry is to accumulate as much Bitcoin as possible and if trading altcoins can generate you funds to buy and hold Bitcoin then you can do so but don't ever think altcoins can replace Bitcoin.