Incorrect. Emotions drive almost every human decision. This is true from the most sensitive snowflake to the most rigorous, detached intellectual.
I believe you overstate this a bit.
First, although it’s correct to say that emotions drive human decisions, I believe it’s fair to point out that conservatives attempt when possible to eschew emotions from policy making. IOW, we either want to legalize the Dreamers or not, because we believe it is the right thing to do, rather than because we feel sorry for them, or hold any angst towards them.
OTOH, most conservatives find it rather common to have a liberal, in a debate, try to make us feel sympathetic or angry towards this or that, in order to try and move our decision. Most of us have an knee-jerk reaction to that, and we reflexively then double down on insuring that our policy position is as firmly based on data or the rule of law (as appropriate) as possible.
One particular emotion that is very prevalent among conservatives…nostalgia.
I disagree. Both parties seem about even in their desire for certain elements of the past, but in neither case does that tendency, in my view, drive the debate.
What you likely mistake for “nostalgia” is the conservative tendency to use the past as a guide for policy in the present. For example, if I want to return US growth to 3% GDP, it seems logical to me to look at any policies enacted in the time period since we averaged 3% that might act as growth dampeners, and try to repeal those.
I can see where some people, if not familiar with that thought process, could misread that as “nostalgia.”
Hope that helps.