@lunarised Well, nuclear is problematic in multiple ways, and since wind/solar seem pretty practical, it would be irresponsible to use it now. The waste that we find no way to deal with, the security concerns that are neglected... not to speak about nuclear weapons. And i hear it is pretty expensive per power generated.
But what i am doubting is that it is the cost of switching. As far as i understand, it is that fossil power infrastructure can net more profits to owners, and switching would prevent them from milking what they already have. So it is important to distinguish between cost to humanity and loss of profits for some few. Not to forget the externalization of costs, as the masses usually suffer more from the ecological damage than the owners.
I generally think oppression (sometimes indirectly and hard to see) is more of an issue than the technology itself.