Depends: how comfortable are you with processing a LOT of stuff more or less at once?
Classic mode removes several types of critter, gear, and buildings from the game. It significantly simplifies the amount of stuff to learn and tends to remove several later-game challenges, so easier but shorter learning curve.
Some folks play nothing but Classic. I’ve never tried it, personally, but have seen plenty of reports. You can always make another world if you’d like to switch, though!