Yes we don't factor the long term effects because we don't know what might happen in a thousand years when some madman digs out our nuclear waste to do some madman stuff for example.

This is not about nuclear vs. fossil. Both are from the past. It is nuclear vs. fast improving and cheap technologies around renewable energy sources. It loses that battle and will keep on losing it because everything around renewables is getting better and cheaper while everything around nuclear is getting more and more expensive and takes much longer than expected.

It's time to face the future.