I am excited to see the potential that cryptocurrencies have to improve the speed and efficiency of financial transactions around the world. It is hard to say which of them will gain traction and which of the many hundreds of different tokens will still be around in 5 years, but the odds are that some of them will be. I presently hold positions in Ethereum and Bitcoin but I feel really good about the future of ETH. I am optimistic about the technology and look forward to a future where people can directly transfer funds to each other to pay for transactions without the recipient having to pay a 2 or 3 % transaction fee to accept credit cards. I have accepted payment of Bitcoin through my Coinbase wallet for a couple of years already and recently acquired computerrepair.eth which you can use to pay with ETH if that's what works best for you. The Ethereum Domain Name auction (https://registrar.ens.domains/) is still going on so you might still be able to lock down your .eth domain if you don't dawdle.
I should disclose that I'm still a little amped up after reading an article about the divergence between Ethereum and Ethereum Classic (https://www.reddit.com/r/ethtrader/comments/6d62td/the_story_behind_ethereum_classic_etc_and_whos/) and am disappointed that the Ethereum Classic folks still support their network despite the fact that it permits the hackers to get away with their ill-begotten gains. There's obviously more going on beneath the surface of the arguments but I won't get into it now. Feel free to ask me about it if you need somebody local to talk to about cryptocurrency. I think there is going to be a lot of exciting developments coming in our future and am looking forward to being a part of it.