I would probably still have voted 'yes' but I have a hard time to denunciate people for thinking otherwise: that paying someone to not terrorize you anymore amounts to "extortion money".
Economically it makes sense. You will have thousands of people which only work skill is to combat. With the end of the guerrilla, they won't immediately find jobs. If they don't have money, they will become thugs.
Still. Morality is often on bad terms with money. If you want to talk with people about principles they often become fundamental money-wise.
Negotiating with terrorists where they get off the hook and even allowed to be part of government is not truly a good idea. Most likely the current regime went this way because of the incredible foreign aid they are betting on once a peace process is hammered out, I doubt they truly care that six million or so displaced people want to come back and there is no guarantee with a peace deal they actually will be able to do so.
https://en.wikipedia.org/wiki/19th_of_April_Movement#Demobil...
Or maybe because people in those territories support the guerrillas?
The treaty was voted down because some political movements lied to the people in the cities (not the victims), telling them that Colombia would become Venezuela, that their income will suffer by new taxes, and that the treaty had Gender equality points (which is true).
The process didn't legalize the crimes nor allow the guerrilla to keep their drug dealing money. That's just FUD. The kind of FUD that made uninformed people vote no.
Uribe fought the guerrilla fiercely, but he did it by getting alliances with paramilitary groups that were even worse than the guerrilla.
The peace treaty is not perfect, and yes, there were some concessions made to the guerrilla. Like the possibility to have 10 out of 270 positions in the congress even if they didn’t get the votes, but only for two periods. It’s not easy to negotiate after 50 years of crude war, but all the lives saved with it are completely worth it.