well, sex drive post op, keep a few things in mind.
first every one is different. really, from the once a day club to the once a month group, dont base what you feel or dont feel, on how someone else is .
next. after srs, you have a small window when testosterone levels plummet. then life begins sans the big "T" . yes your going to think, feel and act different. sex drive is going to change, but isnt that the goal, to get rid of the t life and be a girl? expecting everything to stay the same isnt realistic, and just as in life, most girls, even natural born, are different.
finally, hormones, adding 'T' , get medical advise on that. you should produce enough even without the "nads" hanging around. estrogen im most cases goes to low dose, and is a maintenance type thing that also helps prevent osteoporosis/soft bones/calcium loss. again, proper testing, medical advise from your doctor, all go a lot further then guessing and chat room Md's doling out directions..