After sitting in the library, for over four hours,...

After sitting in the library, for over four hours, I was told to remove myself from the table I was at because this particular table is for teenagers only. I looked around at more than four empty tables for these teenagers that were in the library on a Wednesday at 2:30 pm on a school day. As a tax payer to the city of St. Charles, I m just curious as to where can I sit at the PUBLIC library?