Give Up...it's ruined my marriage and it's just not how I want to bring a child into the world.

Been TTC for over a year. I'm 40 & my husband is 43. I have 2 kids from a previous marriage a while back ( 20 &.  15 years old-which I had no problem conceiving.) I've been tested with a low ovarian reserve, but my doctor is not God. However, this season of TTC has completely ruined my marriage. I hate it and I'm so frustrated because all I wanted was to experience being a parent with my best friend (who has no children). We've done everything and to no avail and each month the disappointment slaps us in the face harder than the month before. This whole process has taken a toll on our marriage that I'm afraid we can't recover from. I have prayed, asked for freaking baby dust and there has to be more to life than this. Right now I see no light at the end of the tunnel but I'm surrounded by ovulation, pregnancy commercials and pregnant sisters on their third kids and counting. I give up. I appreciate all the advice and words of encouragement, but I've accepted it's not in the cards for me. Good luck to you all!