While in this case is the OP does have a laptop, many of us still have desktops with large monitors because of the added flexibility and power. Laptops have limited expandability, limited video functionality, limited hard drive capacity, limited connectivity, small incomplete keyboards, and limited screen size. Don't get me wrong, laptops are wonderful things. But, I virtually never use a laptop at home, only when away on business or vacation.
I do exactly the same. Jersey Boys stick together!