I for one, would voluntarily join up, for sure.
IMHO: emotions and freedom are the base of all wars.
Logic: freedom (the freedom for instance to say what you want) can lead to fighting. Fighting leads to civil wars. Civil wars lead to global wars. Global wars can eventually lead to galactic war.
Unifying everyone's thought therefor is the solution to peace.
If there is only one thought, there can be no war.
The trouble is that it isn't you anymore. You're stuck inside there, unable to do anything while your body is used to do the most horrific things to people, and all you can do is watch. The Borg don't even let you look away.