The last month Ethereum has gone up about 150 % and so far, the token hasn't had any correction of any kind. Many people are new to the currency and cryptocurrency in general and doesn't have really the knowledge to invest in Ethereum. But is that really necessary?
Cryptocurrencies have gone through the roof recently, Bitcoin went over $ 2000 and Ethereum went well over $100. The rise are attracting more and more investors, investors which maybe not that much experience. When it comes to investing in anything you have to know what you are investing in. This is not just because, it will be crucial when a correction happen, if you don't believe in what you have invested in, you will most likely sell and sell with no profit.
In general, when it comes to investing you should buy when you feel the share, currency or gold is undervalued. The question you should be asking: Is Ethereum undervalued even though it is now on $141.20?
I believe it is still undervalued. The explanation is due to what Ethereum is developing into. It is becoming the base of what can become Web 3.0, which have a much higher value than $ 13.8 billions. In 2016 app store had a revenue of $28 billion and the developers got $20 billion. The comparison has it's flaws, however the Ethereum platform is becoming the centre for decentralized app, like Brave.
My advice is buy Ethereum now. Don't wait, just get into the market because it will rise more due of the potential Ethereum has and the impact Ethereum will have on society.
Disclaimer: Read about Ethereum first, then invest.