I had been living there for 23 years. It is a pretty large country and differs depending on where you are. Kyiv, the capital (where I lived), is probably one of the most beautiful cities in Europe. One of the greenest for sure. I also like western Ukraine (Lviv especially), it looks more "European" in comparison with "Soviet" central and eastern parts of the country, since western part historically was influenced by Poland and Hungary a lot.
Ukraine has its advantages and disadvantages. Now, after living in USA for almost 5 years, I would not move back, but I like visiting Ukraine from time to time. People there are pretty rude, comparing to Western Europe and USA, politicians and government - corrupted, but the country has its charm, plus I still love Kyiv :)