A SCALDING show on marriage...

Hello Stefan, I have been contemplating contacting you for almost 2 years. I have been in a sexless marriage for the past 6 years. I do not see divorce as an option since we have 2 kids together and I will sacrifice all of my please and happiness for the well being of my children. I tried talking to my wife about this multiple times, eventually we end up having sex but there is no joy or connection coming from her. It's seems like it's a chore she has to do, occasionally. It was always me who initiated sex for the first 5 years. About 95% of the time I would be shut down by: is that all you think about, I'm tired, I have a headache, it's late. So I gave up and stopped initiating sex, now I'm lucky to have sex once every 2-3 months. I have resorted to watching porn for sexual release. I would like to add that I am the sole breadwinner of the family. I'm in my mid 30s and She is in her early 30s. She does not have to work, or worry about any bills. I take care of all the taxes, paperwork, billing, health insurance, etc. I can say we are middle class and we are not struggling financially. I have tried to move my in my career to supervisor or management position but I don't have the drive or feel like I can because I get belittled and told what to do constantly by my wife. I can honestly say that I know I am providing for her and protecting the our family in the time of need. I would do anything for her if she asked but she refuses to do the same for me I would love to have a conversation with you to discuss my flaws and what I may be doing wrong in order to fix this. I honestly can't go on living in a sexless marriage for any longer. Thank you for your time and all of the knowledge you bring forward.