I appreciate all personality types, but I gravitate to sweet over sarcastic-only. To be fair, "sarcastic" has a negative or "hip" connotation, whereas sweet has a more positive alluring sound in itself. Still, "sweet" may also be understood as shallow, weak, and even annoying (like the little yipping puppy that draws awes but that you avoid like the plague 'cause it is too fragile).
Sweet, as I mean it, is someone who shows compassion by listening more than talking and smiles more than rolling eyes.
Sweet is being approachable, because your spirit welcomes company. Sweet is even going out of your way to show hospitality to a guest-- not because that is "the right thing to do," but because it brings inner joy to do so. Sweet can mean cuddles, but it can also mean allows one space when needed.
Now, I seem to have dismissed sarcasm as bad. On the contrary, sarcasm often shows toughness, whit, and can be a great way to tease for playing games or flirting. Sarcasm may also challenge the person to think twice, rather than blindly trust.
So, you see, I do not see people who are sarcastic as bad.
I do, however, find sarcasm to injure more than sweet. Sure, sweet can turn ugly; sweet can be a façade. But sweetness that is sweetness is good. In contrast, sarcasm can fall like rocks and injure like a boulder. It may be fun to throw the rocks and neat to push a boulder-- to watch the trajectory or show one's strength/toughness. In the end, though, sarcasm is more concerned with self; and sarcasm care little about those impacted.
Now, this does not mean a sarcastic person is self-absorbed. Neither does it mean that sweet people are selfless.
Honestly, now that I wrote the above, I think I prefer a blend. Sweet people make me laugh, whereas sarcasm causes the laughter. Compassion and knowing when to let up, that is key with me.
To the original post, thanks for the teasing question.