If you were arrested for robbery when you were younger perhaps because you had a drug addiction then that person should have a right to serve their time and change their ways later in life without the state holding and distributing that to any potential employer, practically ensuring that individual is unemployable for a mistake they made in their youth.
The reason I think this is not a good assumption to assume that someone will be a bad employee simply because they did something criminal in their past. There are terrible employees out there who don't break the law. If we're so concerned about employers hiring bad employees then state should instead build a centralised database of bad employees and their reason for termination at previous places of work. I'd argue this would be more effective if we're concerned an employer might hire a bad employee.
Secondly, making it difficult for those who have committed crimes to get back into the workforce increases their risk of reoffending. Having a good job and a nice life to lose is a great reason to not commit crimes while having nothing to live for is a great excuse to do whatever feels right in the moment.
Best of luck op. If I was an employer I'd consider you if you had the skills and seemed like you could do the job. I have no idea why your past would be relevant to your ability to work outside of select roles.
A crime completely unrelated to my business may be very relevant to someone I already employ. I have a small business where people are working in relatively close quarters. I don’t want to put a rapist, stalker or some other kind of predator in there with the young woman I just hired. If there was ever a problem that would be on my conscience.
There are all sorts of others I don’t want to deal with either. This is a place where the people I bring in will be around my family, my employees and my customers. I have a responsibility to look out for each of them.
All that said, I wouldn’t hesitate to hire someone with a criminal background if the crime is irrelevant or I assess the risk is low. I don’t care if someone got busted with weed or that they got a DUI 10 years ago. I don’t care if it’s a one time crime related to a very specific set of circumstances that’s unlikely to ever repeat. Or a bar fight, drag racing or dozens of other dumb lapses in judgment that can result in serious charges. But I do care that I’m able to make an informed decision.