When I write about flare, it’s typically not with a negative connotation, unless the lens in question comes with coatings intended to reduce it. Flare is part of what gives a lens its character, and can play a huge role in its desirability.
Charlene Winfred has a great piece on how much she likes the flare from Fuji’s new XF 35mm f/2 WR:
... I’ve never had a lens that flares as downright cinematically as this one. Those distinct diagonals and ghosting that appear when it is pointed at strong, directional light sources are simply gorgeous.
It’s helps to possess the photographic talent Charlene does, but I’ve enjoyed shooting my XF 35mm f/2 WR directly into light myself. She’s got plenty more great sample images on her site.