system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 What are the disadvantages of nuclear powered submarines?

I was already able to find a bit of layman information about the advantages of them via other ELI5 posts. So now I would like straight layman points on the *disadvantages;* not only the main meltdown danger, but other things like logistics vs diesel/electric powered subs. Please note I am asking about nuclear *powered* submarines, not necessarily nuke equipped.
gpt
diesel electric submarines are extremely quiet when submerged and running on batteries.  Nuclear reactors are really big, heavy and complex machines that require very specialized technicians to operate.