I would add some reasons why you should buy ethereum:
1) It is still dominating on the ICO market. This was the main reason of its former growth and it can cause future pumps.
2) Technical level of this project is high when we begin to compare it with some other platforms.
3) Ethereum is still strong and there are many people who are interested in its growth.
Great arguments. It would be much more informative if all people wrote not only minuses but also pluses. Ethereum really has a good potential, especially if the bull run begins.