I don't brush my teeth on a regular basis
Why don't you brush your teeth on a regular basis?
I just forget to do that. I never had my teeth checked. They don't seem to be hurting, so why bother?
You don't remember to do your oral hygiene practices. I would still brush them when supposed to, bad teeth can creep up on you when you least expect it and it grosses people out when you forget to brush them. Your gums can have issues too, so be more mindful of brushing them.
Maybe you're right but It's too much of work to brush everyday.
Maybe you don't have any issues with your teeth at the moment but in a long run it definitely will cost you a lot. If you want to remain healthy in future you should regularly brush your teeth. Read about how not following oral hygiene practices can be hazardous to your health.