[/quote] Thank you for your answers.
I also think if bitcoin dies because of loss of attraction and consumers. ETH will take over Bitcoin because we know that ETH is the most popular after Bitcoin. how do you think about that?
[/quote]

I think that it actually might be any alt coin. ICOs are booming at the moment. There will be definitely several good projects within next several years.
To be general - there is always a substitution to everything. People demand will disappear only with humanity lol.

Way back in 2016 I'm telling to my friends that I'm a bitcoiner but now when they are asking me ( because they have noticed that I have some big cash ), I just told them that I'm not doing BTC anymore (altcoins for sure ).
[/quote]

If mentioned what is big cash in your or maybe friends' understanding? 
My friend and I discuss BTC occasionally. He gets angry as several time in life he advised his father to invest and he didn't listen. Last time it was this August, when BTC sky rocketed. Now he'd like to invest, but the coin became like 5 times the price as at the moment my pal gave recommendations to his father.

Warning is much appreciated.
Had to deal with scammers several times in my life previously. My recommendation is never hurry with any decisions. Also, not to deal with people who don't have confirmed profiles on different places.

Just starting getting to know the crypto world. My guess that Ripple is worth buying.