A word of advice: Castration is permanent. Afterwards you will no longer fantasize about it. You won't care. Sex will be what other folks do.
Your body will change and adapt. This will take at least 3 years. You will have hot flashes, weight gain, body hair loss, and penis will shrink in size. Without estrogen, you will not grow breasts, but you will gain some fat. You will stay the same person (personality) as you were before. Your beard will still grow, but not as fast as before. Your hair color will lighten (at least mine did). You will need to mind what you eat so you don't become obese. I was skinny and could eat and eat and never gain weight before castration. All that has changed.
Caution: If you are serious about castrating yourself - DON'T! Find a real surgeon, not a cutter. Don't try using the tools and methods used for farm animals. It will hurt and it won't work! I know.
After castration, be prepared for explaining your condition when you have to go to your family doctor or an ER. Mine was shocked, but he got over it, and asked me about the effects that I was experiencing. There are a lot of accidental eunuchs out there, but don't brag about it. You could lose some friends and be subject to public ridicule. If they don't need to know - don't tell them!
My wife knows and understands. We kiss and hug and give each other back rubs. We still love each other.
Why did I have it done? Simple - I was a sex-a-holic. I could not refuse a sexual offer - male, female, young, old, it didn't matter. I cheated on my wife; I engaged in unprotected sex with strangers; I masturbated daily. Now I have none of this. No more worries about getting caught or catching a disease. It is ended. I am at peace.
