Vasectomy and other procedures

I have decided to undergo a vasectomy after discussing it with my wife, but I'm really worried about actually going through with it.

There are various reviews on the internet, but there are many opinions about male function after surgery...

Some people say that the functional aspects seem to be lacking...

Some people say it's an unfounded story.

I'm also curious if there are any particular side effects.

And I am also curious if it is possible to receive additional procedures while undergoing vasectomy.

I'm a bit scared to actually undergo this surgery as well.