In my main gig we run on kotlin (fintech/accounting saas) and I absolutely despise it, the overhead is massive. But I wouldn't want to write it in golang, we really need proper OOP. It's also so unbearably slow, it's actually impressive. But it is what it is ¯\_(ツ)_/¯
Also, to be fair, a big part of the slowness is also the tooling, Spring Boot, Hibernate etc. You can mitigate that by using micronaut or exposed/krush, but we only have a microservice running on that. The main business logic is the classic java web stack. Tests, running the app, building takes forever.
