Why is there so much traffic during the day mainly in big cities?

So i live in nyc, and I've noticed this here as well as in other major cities across the country. I've always wondered why I run into a ton of traffic in the middle of a work day. Like it could be noon on a Tuesday, and theres still traffic. I thought people worked during the day, why are all these people driving. It doesn't make sense to me. Where could all these people possibly be driving to during the week instead of working?
Answers

Been There, Done That.

People going to lunch, delivery people, tourists, drug dealers, people who work nights doing their shopping, Taxis, retired folks, under cover cops, and people who are just LOST.

Robert D

Deliveries. Meetings. Visiting sites, customers. Staggered hours/shifts. Not everyone sits at a desk all day.

thebax2006

Ever hear of lunch time?

RICK

Many work nights and take care of personal business at midday Some are working, driving Uber or making deliveries Some are out of Towner's, hitting the big city for shopping or seeing the sights In other words many reasons

Anonymous

Because there are a LOT of people and a LOT of cars.

Jay P

Not everyone works in an office 9-5.

Dimo

Cartoons are "funny" because they show reality. Driving in the city, in 1950, had problems -- https://www.youtube.com/watch?v=HdgVcGjzgR4 We have the same amounts of streets in the city. We have twice the number of people and cars, today versus 50 years ago. We have stretched "rush hour" traffic from one hour to all day, to handle the increased traffic. Which is why to see "a ton of traffic in the middle of a work day."

Lily

There are lots of people live and work in big cities and nearly all of them own cars. Besides, roads of cities are always not enough for cars and very crowded.

ponderer

Lots and lots of people make it a habit to go nowhere every day. During the day.

Percyqted

Not all people work in offices and some of those who do work in more than one office.

Ron Akia

A good portion of it is due to the increased population caused by illegal immigrants. Driving near larger US cities was never as bad as it is today.