I am myself more than 50% Russian (If I counted right, I'm almost 3/4 Russian and 1/4 Ukrainian or maybe 1/2-1/2), I've been to most of EU countries and I know how different things are in EU, Ukraine and Russia. I've also been to eastern Ukrainian cities, like what Serr posted, these cities are extremely polluted by outdated and mostly useless industry factories. Well, these factories give working places to people but besides that their meaning of existence is doubtful. They all need to be modernised to fill the gab in the Ukrainian economy. For instance, Ukraine is in top 10 of countries in the World producing coal among with such giants as USA, China, India and Russia. And all the mines are located on the east of Ukraine. I've been to industrial cities, they look like post-apocalyptic soviet cities. And I doubt that anyone who has seen European countries would want to unite with Russia.
Also, as I've already stated: the current opposition who has obtained power in the Parliament now is not much better so things won't change drastically.