It is a beautiful show with amazing characters. It is relatable and very funny. The plus point is that the humor is sourced out of daily life situations, and never by demeaning or hurting anyone. As for the characters, none of them are perfect, and can be shallow, dishonest.
Modern Family is primarily a comedy that revolves around three families that are held together more by their virtue of acceptance and love than by the blood ties that connect them. Each character has been thoughtfully written out and played to perfection by a slew.