Ya, I know a couple of people who used it for that too.
One thing I do know you have to be careful of is product certainty. There are some cases of Kratom being used as a carrier for designer opiates out there.
Like other drugs with psychoactive properties, it has both legitimate applications (either medical or recreational) and possible drawbacks (addiction, overdosing, negative side effects).
It's unclear at this time what sort of regulatory regimen should be implemented around kratom usage.