Guess I like zombies, that's why i revive this thread.

In the last time, there was a lot of buzz around bitcoin. The price keeps rising, the general public is aware of it, the blockchain as a technology itself gets more and more publicity. So, I got intrigued (again) into looking in cryptocurrencies.
I do not want to get into mining bitcoins, because that is not worth it imho. Energy price is too high here.. That's why I thought about looking into alternative currencies. Ripple and Ethereum seem to be interested, because the entry-cost is quite low. Litecoin would also be an option, for the same reasons.
I haven't looked at the technology behind any of these three, but that'll follow as soon as i have some more free time at my hands..

Any thoughts on the topic? Or is it too risky to buy in anything else then bitcoin right now?