All of what you said just goes to show the only side who benefited from the annexation of Crimea is mainland Russia, while it's a total inconvenience for both Ukraine and Crimeans.
Current Ukrainian goverment is trying to do it's best to create problems in everyday life of ordinary people who live in Crimea (border incidents, block freshwater channel, swich off electical lines, food blockade etc.) but it certanly don't help Crimeans to love their former state. Most people there started to hate Ukraine with all their hearts because of that. If at times of referendum about 20% of Crimeans didn't want to join Russia (most of them simply didn't vote) than now very few such people left, most of them changed their opinion. I met such people there myself.