So you'd rather want a bloody conflict with thousands of dead people?
If Putin actually starts a conflict with Ukraine, it definitely won't be his last conflict, as well as it will be indeed bloody and with dozens of thousands of dead people. Also, Russia has already started the conflicts in Moldavia ( separating Prednistrovie republic) and in Georgia ( separating Abkhazia and South Osetia), and is believed to have "helped" Armenia and Azerbajdzhan to start fighting each other because of Nagorny Karabah province. Let us not forget the russian position on Syrian civil war - I have a feeling the rebels would have won within a month but for Russia actively supplying the government with weaponry in sake of keeping their military base in Syria and abstract "prestige". What I'm trying to say is that Russia, and namely Putin, are responsible for dozens of thousands of dead people already, and it is unlikely he is going to stop by himself. Hitler never stopped on Czechoslovakia, Austria or Poland, he always demanded more because he was allowed to.