Which extracurricular classes do you send your kids to?

I am a first time parent with a 4 year old. We don’t have any parent friends in our social circle. I was blown away when another parent I recently acquainted with told me that his 4 year old has been attending dance, swimming, footy, music, English and maths classes since the age of 18 months. I didn’t know some of these classes even existed for kids that young. My 4 year old has not gone to a single class up until now.

This got me thinking how many parents out there are enrolling their kids in extracurricular activities from a young age to set them up for a successful life.

Which extracurricular activities do you send your kids to and since which age? Has it been beneficial? I am also interested in hearing from parents who are on the opposite side of the spectrum who have never sent their kids to anything except school. How has that worked out?