I believed that every capital city is crowded and busy. People in the provinces leave their place to gamble their future in the city. Many people from provinces gained progress in the city but also failure to many that caused slums and poverty.
Most people in the provinces wish to see and stay there.
When I went to Cebu and Boracay, I met some locals and they want to go with me back to Laguna. I feel their excitement but told them I love your place than Manila.
Manila's population is about 10 million, most came from the province. Hence, Manila is a historical place like Spanish heritage.