A Oes Arwyddion Gwir Angen i Gael ei Ysgrifennu yn y Gymraeg?

There are virtually no people in Wales who don't speak English, and the few who don't are below the age of 5 or over the age of 70.  Is there really any need for signs to be written in English and Welsh?  Just think of all the money that would be saved.

The village Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch in Wales translates to "Saint Mary's Church in the hollow of white hazel near a rapid whirlpool and the Church of Saint Tysilio near the red cave", COME ON, REALLY???