There are of course some of the top 10 coins, which would qualify in my view:
- Fiat Currency: Which is like cashing out of the crypto world, not really an alternative to BTC
- The majority chain: the split of BTC that would have the most nodes, miners, merchants and users behind it
- ETH: Which has the closest market cap to BTC, and the most users after BTC
- Ripple: Which has banking integration and a somewhat stable price
- LTC: Which is the closest to BTC in terms of code similarity
- Monero: Which is has privacy implemented in it
- Dash: Which is has low fees, privacy and a democratic consensus mechanism
So which one is it for you?
Even Bitcoin face a disaster in time we did not expect, I would rather still keep my coins. Unless, if someday there's an altcoin become significantly will increase the value like what bitcoin has. Well, no doubt that I will shift into that altcoin to convert my bitcoin.