And just getting bitcoin
You may be more money conscious than enjoying life. For what purpose we are making money so hard : Just make our life ease and fun filled. If we do not eat we can save more. Is it possible? Same way spending for necessary things (it may differ person to person) is also part of life. So, spending bitcoin for porn sites is good for some people's usual lifestyle.
Well said. For many people, visiting porn sites are part of their daily activities. So, they never think of future worth of bitcoin, they just consider it as their money and using it for today's value. Nothing wrong in it in my view also.