Am I alone in this?

Hi ladies...My dh and I are in the process of making our decision regarding IUI vs IVF vs continuing to try naturally. I'll be 35 next week and we've been trying 15 months. We've had all the tests and they can't find anything wrong with either of us - on paper, we're both totally normal and healthy. We've had 2 appts with a fertility Dr and now it's up to us how we want to proceed. At first, meeting with the RE was a huge relief - I felt like we were finally moving in the right direction. But now I'm starting to feel really depressed about the whole thing. I really, really don't want to have to be dealing with any of this and I feel like it's so unfair. If we're both so dang healthy than whyyyy am I looking at spending $25k and putting my body through hell for something that should be easy and free?? I'm feeling overwhelmed, frustrated, terrified, and incredibly sad, and it feels like this whole infertility thing is sucking the life out of my marriage. Did anyone else feel this way before their IVF journey? If so, how did you cope? Any help or support you ladies can offer is greatly appreciated! Thank you.