Ask a smoker

[Aroura]

Basically, anything that is bad for your cardiovascular system is not good for sex.  A man needs to have good blood flow to the penis to get and maintain an erection.  So anything that interferes with that is mucking up your sex life.

For women, the situation is different.  A woman can still have sex.  But it very likely reduces a woman's ability to experience orgasms.

People very often have a mistaken idea that doing unhealthy things simply lessens the length of one's life.  But it actually affects the quality of one's life before one dies.  It is rather more like aging faster than normal, not eliminating the decline from age.  One declines prematurely with an unhealthy lifestyle.  If what you want is a high quality of life as long as possible, but without the decline of age, you need to live a fairly healthy lifestyle and then commit suicide before you get old.  Unless, of course, you are lucky enough to be killed accidentally, like by being run over by a bus.

Yeah, my condition is quite probably caused by lack of blood flow. It's still undiagnosed after nearly two years but I do go to the hospital every few months for an ultrasound and thankfully at the moment it seems stable. Let's just say if the trend continues I could die as a woman as my testosterone levels are dropping. Are you a doctor?

As to your other point I fully agree... now 

You CAN quit!  I know how hard it is, I tried many, many times before doing so successfully. 
Think about the issue you are having now, and how it will only get worse.  Think about how it might ge better if you quit!  There are a lot of smoking cessation programs out there, many of them are free. If you live in the states, I think most states will give you one box of either patches or gum for free.  Counseling can also help.  If you know someone else who smokes, get them to quit with you, so you have a support buddy, or make a friend at the smoking cessation program and lean on each other.  Put $1 a day in a jar every day you don't smoke, save up for something you really want.  Use sunflower seeds when you get a craving (I ate bags of them, they really help).

Sorry, not to be on a high horse or anything,  I just know the pain of wanting to quit and struggling, so just trying to give helpful advice.  Its been almost 9 years for me since my last cigarette, and it is sooooo great not to be a slave to tobacco anymore. I still fear the smoking I did will come back to haunt me someday, so the sooner you quit the better. I hope you get to feel that freedom again someday.