Kevin Myers is not far wrong about what happens around 'town centres'. I would add that the reason a place is given the title town centre, in my opinion, is because it then allows local authorities to build whatever they like around it, including high-rise apartments, new housing estates, retail parks, shopping centres, etc. This fits in accordance with the development plan, making it hard for local residents and politicians to put a strong case forward.
Tallaght is an good example of this. When we became a town centre our beautiful village and surrounding areas were destroyed by high-rise apartments and derelict lands. Many apartments now lie empty and in the hands of Nama.
If where you live suddenly becomes a 'town centre', beware. Just pay a visit to Tallaght village for proof of damage done by a name change.