Thank you for your input. For the record the reason why I want to do a mission is not because I want to be glamorous and God like, it's to get to know God better in my DTS and find myself, hopefully finding a purpose in the process.
Assuming from your post I am going to guess you are somewhere between 18-late 20's...
I want to start off by saying, I apologize for making it sound like I know exactly who you are... I don't know you from Adam, so I have to guess on reasons you might feel this way and respond to those guesses...
As far as knowing God better, it does not come from knowing different people... There is only 2 ways to know God better, 1 is by reading His word, 2 is by living His word... You can only do 2 if you are doing 1...
Secondly for many reasons the millennial generation thinks they need to travel to another culture to find out who they are... This is hogwash, you already know who you are, and if you don't you skipped all of childhood... Every decision you have ever made tells you who you are... Instead of going to another culture, take some time and look back at every choice you have made and ask what type of person would have made that choice... By the end of your questioning you will know who you are better than going and hoping you see it in a foreign county.
Also the best way to know who you are, is through God... This sounds vague, but you can find who you are through what sins you do, and by reading about Him.
In my opinion you don't need to go to Mexico to fulfill what you want, you could do it exactly where you live...
Edit: I am only 22 so I fall in the millennial generation, I am not talking down to you, but explaining what I see in all my friends and acquaintances.