It wasn't just the USSR economy and staffing that made Chernobyl a bad reactor. The main reason was simply the design of the reactor; it was, like most things Soviet, inefficient and had few safety redundicies attached to it. Many modern reactor designs are designed so that, even in the incredibly unlikely event in which everything that could go wrong does, it will not explode and will remain inside the containment dome.
I do wonder, though, how many people have died and will die directly because of coal mining and collapses; oil drilling and fires; incidents with exploding or burning car/truck gas tanks, gas stations, propane tanks, etc. Or perhaps how much environmental devestation has been caused and will be caused by supertanker oil spills and, well, just fossil fuels in general.
Or, to use another example, how many people have been displaced and enviroments destroyed by the building of hydroelectric dams. What if those things burst? Its about as likely as nuclear reactors exploding. Do you believe they are as dangerous? Can you imagine the devestation a dam bursting would cause? The loss of life? The destruction of land?
There are many, many things just "waiting to pop" the world right now if something is done wrong or, to quote the TBS version of Forest Gump, "it happens." Countless things already have gone "pop." What has caused the greater amount of cumulative damage?