Besides: nuclear had its chance - they blew it because of greed and sloppiness, the usual thing that happens when large organizations deal with complex issues. I am 100% sure that even with novel reactor designs the same "human factor" would generate accidents like we have seen with the old designs.
A lot of smart people being very very sloppy.
Filmmaker Adam Curtis mentioned the risks of the type of boiling water reactors cooling systems such as those in Fukushima I,[36] and claimed the risks were known since 1971[37] in a series of documentaries in the BBC in 1992 and advised that PWR type reactors should have been used.
Fukushima had been warned their seawall was insufficient to withstand a powerful tsunami, but the seawall height was not raised in response"
Still no indication of greed, sloppiness, cut-corner mentality and general incompetence?
Stopping making more doesn't make the problem go away (...at least for many thousand years). I'm more optimistic that current waste will be reprocessed or stored safely if nuclear power generation continues than if it all gets quietly forgotten.