The meaning of the song? Tragically it's been pretty much destroyed by A1's heinous alteration to the lyrics. Whether by error or intent I don't know: either is inexcusable, the latter unforgivable - they have completely missed the point of one of the best songs ever written. The correct lyric (as written by a-ha) is, of course, "It's no better to be safe than sorry", not "It's so much better to be safe than sorry".
Carpe diem (seize the day).