IVF and my marriage

Has anyone else out there had a hard time talking your husband into <a href="https://glowing.com/glow-fertility-program">IVF</a>. We have been diagnosed unexplained almost two years ago. We have tried everything. Including 9 IUIs, all different medications and every oldwives tale out there. With no success. Our doctor has been pushing for <a href="https://glowing.com/glow-fertility-program">IVF</a> for the past six months but my husband keeps telling me that it's not natural (and by the way it has nothing to do with religion).  
I finally hit a breaking point and decided I was done trying (we have been for 4 years). I decided if he didn't want to take the next step to <a href="https://glowing.com/glow-fertility-program">IVF</a> then I was done with all of the pills and IUIs. 
He then told me how badly he wanted a child of his own that he would do <a href="https://glowing.com/glow-fertility-program">IVF</a>. I have been doing all the prep and we went the other day for our teach class and to sign the paperwork. I am supposed to have my first scan on Friday and then begin stimulation on Monday. He showed up an hour and a half late to the class and then couldn't bring himself to sign the papers. Said reading them made it feel even more artificial. I don't know what to do. 
He says it bothers him so much that we don't even have to have sex "like normal people" to make a baby ( that comment drives me crazy, I keep telling him that <a href="https://glowing.com/glow-fertility-program">IVF</a> is very common now a days). And then in the next breath says how he has always wanted a child of his own. I am trying to make that dream come true. We just need extra help to make it happen, and there is nothing wrong with that. 
Has anyone else had a stubborn husband. And if so how did you make him comfortable with the whole idea of <a href="https://glowing.com/glow-fertility-program">IVF</a>?  I am so torn I don't know what to do.