The most important advantage of Bitcoin is safety of Bitcoin. I don't talk about price of BTC. I think that chance that Bitcoin have any backdoors or weaknesses is minimal. Because BTC is already was checked by thousands of hackers.
I agree, this is really one of the strengths of this coin, for which I personally love Bitcoin. In addition, Bitcoin remains and will be the main coin for a long time, so it will not be superfluous to have Bitcoin in your wallet.