With small rockets, baffles are a waste of time, IMHO. I like baffles on larger rockets because I hate dog barf (dusty/messy) and commercial wadding can be expensive considering what you are paying for.

I can whip up baffles using scrap cardboard for zero added cost. I don't put them in all of my rockets. It's one of those "in the mood" type decisions I make when I'm building them. Chances of adding a baffle are greater if the rocket is already going to need a coupler to join two body tubes. There's a considerably lower chance if it's just a regular length of tube.

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I love sanding.