We can incorporate a company in Europe, to be "closer" to our customers. Ireland seems a good option as they speak English, and they will stick to the European Union. There are some tax advantages as well, but I don't expect to see much profits anytime soon. In the other hand, for non-EU residents, they require to buy a $1,000/year insurance (plus the registered office fee, the company secretary fee, etc) and there are not many resources and tools on how to operate your irish company. I fear that I will have to hire a lawyer or an accountant for even the smallest question. Also it looks like that I need to fly from my country to Ireland to open the bank account.
The other alternative is to set up a Delaware C Corp or LLC. There are plenty of resources and tools to help you run your business and there are services (Stripe Atlas, Gusto) that makes it easy to start and even get a US bank account. Also, if everything's goes well, we may look for US investors and I guess it is easier for them to invest in a well-know structure, such as a DE C Corp. On the other hand, it seems odd to have a Latin American-based US company selling to Europe.
We are talking to lawyers to sort this out. But it would be very helpful to know your experience and opinions as fellow entrepreneurs and investors.