nuke deal

i do not understand this simple fact...how much of india's future energy needs are to be fulfilled via the toute of nuclear energy?
most of the experts say it would not be greater than 15% in any case.
while it is understandable that we should plan for energy security, i do not understand why this should be with nuclear energy, which is the costliest source of energy right now.
we have cheaper options like coal and hydel, why don't we plan our energy security based on these rather than something that we can not afford?
then there is the fact about the radioactive waste....most of the countries that went nuclear have huge stockpiles of radioactive wastes lying with them and they do not have a clue as to what to do with it...
every aspect of our country is jam-packed with population.....any adverse incident may poison a large swathe of population.....
or we don't care as we didn't care about survivors and victims of bhopal tragedy....
if US really has our interests at heart why do they not declare us a nuclear power nation and exempt us from any sanctions, why go around in a roundabout way?
no... despite lefts rhetoric, there is some point that has not been explained by the government...
and that bothers me.