Internet censorship affects way more than just sexual lifestyles. The internet has become so deeply ingrained into our society that it's censorship would have the potential to affect so many aspects of life. For instance, I get most of my news from the internet.
But yes, it does affect sexual lifestyles. It doesn't directly reach into what happens in my bedroom, but it affects the information I have access to, including sexual health information and resources. It has the potential to affect our access to products of a sexual nature, entertainment with sexual themes (not just porn), and networks that many people use to find sexual partners.
In short, if you think internet censorship doesn't affect your sex life, think again.