Youtube is full of "pet otters." They are mostly lies. Many of those otters are wild, stressed, or from illegal breeders. They don’t show the 3 AM screaming fits.
There is a famous otter named "Sakura" in Japan. She lives in a cafe. People pay to watch her. She still bites the staff. Love is not enough.
If you want an otter, volunteer at a wildlife rescue. You get the goofy face without the life-ruining commitment.
Everything You Need to Know About Owning a Pet Otter
The Smell Factor (A Dealbreaker)
Otters stink. They have scent glands. Their poop smells like low tide and death. Imagine that in your bedroom.
They also rub their bodies on everything to mark it. Your pillow will smell like "otter cologne." It is not pleasant.
One zookeeper said, "An otter enclosure smells like a thousand wet dogs that ate rotten fish." Now imagine that smell on your carpet.