Pro. One of the cleanest energy sources you can get. Highly reliable. Fear about waste is vastly overblown which becomes apparent when you spend even a second researching it.

It is one of the only viable energy sources for space travel, which means it's not something we should phase out or stop researching. The only real alternative at this time is hydrogen fuel cells, which are explosive, and a lot more complicated. Solar is only viable at a certain distance to the sun. Nuclear energy is the clear winner by almost every metric.

Think about how basic of a concept nuclear is. You have a spicy rock heat up fluid. The rock stays spicy for a long time and you rarely need to change it. That's it. You're not burning anything. You aren't using overly complicated electrical equipment and membranes. You don't need specific weather conditions or specific geological features like rivers or geothermal vents. It's a rock that gets hot and can stay hot.