There is to many positive reasons to have a VHF radio on board.
First of all the ability to send and receive distress calls to vessels in your immediate location, weather and navigation hazards are broadcast repeatedly, etc. etc.
All the positive reasons have been previously stated , if I am passing by a boat in distress 1/2 mile away unless you light a flare (those old ones under the seat your Grampa bought in 1986 that probably won't burn )
I'll have no idea you need assistance you can try and send me a text but you don't have my number. I could be at your side before you Google what to do in a marine emergency.
Of course you'll be okay, you have that little plastic telescoping paddle that met the minimum requirements.
GET A RADIO, EDUCATE YOURSELF ON IT'S USE, USE IT RESPONSIBLY!