Preventing Sticky Buttons??

In the past year, I've owned two Ferraris. The first was a 2012 California. 5,000 miles. Florida car. Horribly sticky buttons, steering column and trim. The second, which I still have, is a 2011 458 Italia. 5,000 miles. California car. The buttons are pristine. Obviously, I'd like to keep them that way. Does anyone have any insights into preventing the stickiness? Is it caused by heat? What causes it? Armor All? Sweaty fingers (LOL)? The envy of onlookers (haha)? Was I just lucky and got good ones?