Probably, you have. If you’re a fair bit older than when you were last riding, there are physical changes that might affect things. But the biggest difference is your everyday riding experience. Or, rather, lack of it.
That street-wise sense you acquired over your earlier years will be rusty. Possibly your machine control, too.
Depending on how long you’ve been away, you’re likely to notice how much motorbikes have changed. Tyres, brakes and suspension have improved markedly. They had to, to keep pace with engine development. Top sportsbikes now generate close to 150kW, with maximum speeds over 300km/h and mind-blowing acceleration. You can imagine what this demands of the rider.
Some roads have improved over time while others have deteriorated. Bad road surfaces that might have been a discomfort in your car, are a danger on your bike. Don’t get target fixated by surface problems, but keep alert to what your eyes are telling you.
More traffic presents its own problems. And you’ll need to clue up on how motorcycle specific traffic laws and their interpretations have changed.
One thing that has definitely changed for the better is the quality and availability of training. And improving your skills and safety comes with a bonus: you’ll have the time of your life doing it and get a huge sense of achievement.