Exchanges don't want to risk working with Ripple. Nobody knows how this story might end.
It seems to me that if the situation were really bad, then the coin would be worth nothing. Now ripple cost still something, so there is a chance that Ripple will live

Altcoins bring profits and benefits both in terms of investment and trading. What matters is not the number of altcoins being bought, but at what price to buy. If the project is profitable and you feel that such an investment will bring you income, then naturally you buy more coins.

First, you can't actually use the cryptocurrency to buy and sell things, though Paypal hints that paying for goods and services with cryptocurrencies could be possible in the future. The problem is, every crypto exchange in the world already lets you pay for things with cryptocurrencies.

Don't forget silver.

The gold/silver ratio suggests that there may be an inverse correlation between BTC/Gold, as silver seems to have held up better the last couple of months:

https://www.bullionbypost.co.uk/price-ratio/gold/silver/threemonth/

Both altcoins are very popular, of course more people support Ethereum, but time will pass and perhaps Polkadot will be able to catch up with Ethereum or even overtake, just need more time and judging by how Polkadot develops, I think this can really happen, but it is hard to say which of these altcoins will increase in price the most in the coming days, perhaps Polkadot, because Polkadot has been growing very much in price lately and I think Ethereum will grow in price more when will be next news about Ethereum 2.0 development.

I am an Ethereum fan and I also invest in Ethereum, but I saw Polkadot price increase very high and now Polkadot is in the top 5 on coinmarketcap, so in your opinion in the next 7 days, which price will increase very high? Ethereum or Polkadot?

if I personally would definitely choose Ethereum