It's nice to have a bit of variety between the two, sometimes you might buy a couple lottery tickets a week ahead and then forget about them - only to get an alert that you have won a prize. It's usually the lowest prize possible, but in the meantime you can dream of what might be possible with such huge amounts. Slot games can occasionally be thrilling, especially when they suck you in and you get those big wins. You know that you'll lose long term playing most casino games, but you still get a thrill from playing through $25, getting down to $5 and  then suddenly winning a $50 jackpot type score that puts you way higher. Most gamblers keep playing through however and lose it all.