It's completely normal for people to join in conflicts
But how the conflict began? Who started it? Junta ousted Yanukovich, yes. But per my understanding, those guys were not anti-Eastern, and were representing entire Ukraine. People in Donetsk could put up with it just as others regions did.
BTW, it is funny, how they declared elections and there was plenty of candidates, but since very beginning all knew who wins.

So excuse me, still it was Russia who had organized this mess and that I can't approve (and prove of course). Never.
Not that I could approve of how Ukrainian "army" acted, but it was AFTER we started.
It has been bad year. We realized that Putin does not give a damn for Ukraine and Ukraines. But the worst I realized that most my countrymen too, and don't object Russia to copy US's behaviour. This hysteria in our mass media... it's terrible thing.
In essence it means that bombs can start falling upon your heads SUDDENLY and for Ukraine this war is not cold.