A reliable roll opens up many new opportunities for your sea kayaking. It does wonders for building confidence for “sporty” conditions. Learning the roll is confusing as your inverted and under water, but it’s completely doable.
This is the type of skill that you don’t stop practicing when you get it right. You have to practice until you can’t get it wrong. That’s because its a skill you will need in high stress situations. If you only kinda have it, you won’t have it when you actually need it.