We can all appreciate the beauty of the human form. The feelings you have are certainly not stupid!
There is beauty in the curve of a neck, the strength of thighs. The roundness of a belly, strong arms, eyes, lips! It is all beautiful isn't?
If you have a passion for photography then pursue it. It is certainly doable to keep your main job until you get a foothold. Photography as a second career might be ideal for you.
Even if you don't make a living you can at least do something you love.
If you are ever so inclined post some of your work here. Many of us would be happy to see it.