The database is given to parties so they can audit if people live where they are voting, or even if they live for that matter. Not giving them access is not an option, if you want the continue having a voting system that does not require trust, as the mexican voting system was designed to allow.

I agree that the database should be made public for all citizens, as it currently stands, only parties registered for elections get a copy, and no doubt use it for their campaigns. This puts people outside of the party system in a disadvantage against the parties, particularly relevant for things like citizen initiatives.

"I'm not sure I will ever renew my Mexican voter registration."

What are you going to use for ID if you don't have a credencial?

Passport.

Do you live in Mexico? I understand if you don't, but if you do... wow! it's such a pain to carry a passport. My IFE is expired right now and I have been carrying the passport for a couple of weeks, always afraid I will lose it. The cost of the passport alone would be enough motivation for leaving it at home.

To be fair, driver license is also good enough for most cases.

I'm not saying it isn't a problem. IIRC, there was a breach in Georgia with a lot of extra information similar to what you describe.

If it isn't provided by the state, Political parties buy lots of information based on the voter rolls. They know alot.

Nobody cares whether it could be worse, the point is that it must be better[1].

The data leaked is enough to gain access to almost a hundred million people's account on any web-service or, as some other comment pointed out, in Mexico's case even to real-life services like banking.

[1] The United States are not the norm. You might live there, but that makes you a minority of the world population. There are some nations that actually value democracy and privacy, not just on paper.