I firmly believe that cryptos aren't a form of gambling but as of now, they do have gambling tendencies. This I feel attributes to the volatility of the price. You have written a very good article @fr3eze but, this can be extended to many other real and useful cryptocurrencies.

So, volatility is the only thing which I feel is making cryptos look like gambling arenas. This volatility is not just because of the market, but due to Greedy whales who manipulate the market for their selfish needs.

And soon, as we hit mass adoption of cryptos, it will become very evident to all the naysayers on its true capability as a decentralized currency.

Warren Buffet comparing BTC with a house is not right as you pointed out. BTC should be compared with other FIAT currencies and I do believe that the cryptos will get stable eventually.