Congrats on your engagement!
We decided to have a destination wedding because we're both among the last in our circles to get married, and we've attended so many weddings over the last few years that we wanted to avoid the stress, do something different, and have a week of memories instead of just a day. Cost is also a factor - It's hard for me to imagine justify spending 50k on a one day event. Our family and friends mostly seem supportive so far, and while we won't have every single person we'd want attend, I think most of our closest family and friends are happy to attend.
We've just started planning as well and I've actually found that planning a destination wedding has its own stresses and headaches. Right now we're trying to lock down our wedding day and choose a resort that we want to get married at, but is also affordable for our guests. Right now, the two don't seem to be matching up (haha), which is stressing me out. Also, I'm pretty Type A regardless of whether the wedding is held at home or in Mexico, so I know I'm going to be picky about things like decor. But when I think about saying our vows in a beautiful and romantic setting, it makes it seem more worth it to me.
I think some couples plan on some type of AHR or bon voyage trip to try and assuage some of that guilt. We haven't gotten that far yet, but I don't think I'd want a full out AHR as to me, I want my wedding to be in Mexico period. But we might have some type of more relaxed party as a celebration - just not a formal sit down.
Hope that helps! Welcome to the forums - this place is great