Some of the edgelord Tav options are pretty funny

>>533332154
Generally yes it's useless to have an odd score, but there is a corner case worth mentioning which is ability drain. If someone drains one of your abilities by one, your ability modifier won't change if it was an odd number that had a superfluous extra point anyway. Think of it as a buffer. But the player getting ability drained is rather rare in this game and it's healed in several ways immediately after it happens, so I wouldn't actually build with this in mind.

The Resilient feat is also worth mentioning, since it improves an ability by one and gives you proficiency in the corresponding ability's save. It's not exactly one of the "good" feats but gaining proficiency in dex, con, or wisdom can be useful and if you don't need two ability points it can be efficient in that regard. But asi is generally better in most circumstance.