I think the other reason we feel emotional about Ukraine is because it is reachable by land from here.
I f we look back at those causes that have caused so much emotion over the years: Roumanian orphans, back to 1956 and refugees from the Hungarian up rising, we felt we could give practical hope, people drove there with lorries and came back with personal stories.
The other thing is that in Syria, Lebanon, Myanmar, they are not places we can give real tangible help for, give things away, go and deliver them to collction points. All we can do is give money, we are distanced, fill a form in transfer money, so impersonal and distanced.
In the more distanced cases, the cause and sides of the problem are all internal, not self-inflicted, but arguments between two national sides. With Ukraine they have been attacked one sidedly by a bigger stronger nation with no excuses except territorial acquistion.
In Roumania it was the truly appalling conditions of thousands of innocent small children handed over to state care because contraceptives were forbidden their parents and every extra baby, brought families to starvation point.
In Hungary it was 100s of thousands of mainly young people between 15-25, who fled their country and needed help and support.
Yes, of course we care about those who we can empathise with, whose homes and lives are so close to ours. It is an instinctive survival requirement that kicks in the recognise those nearest us and be suspicious of the unfamiliar.