If you could only play 1 opening for the rest of your chess career, what would it be?

it can be 1 for black and 1 for white. 

Italian (white) and French (black)

Italian

Vienna, Scandinavian

Caro (black) and Caro (black)

Cole system for white, queens pawn Zukertot opening for black.

Ok, how about:

Exchange Slav (white) and Exchange Slav (white)

The Lolli Attack (white) and Vukovic gambit (black), chaotic sacrificial games where I am not even worse, although obviously both openings are extremely rare and opponent most likely won't go into it. 

Grob, Borg

Stonewall it works for white and black and it is my favorite opening.

I actually really liked lolli attack when I used to play fried liver. It's pretty good because not many people know it and it is slightly better than regular fried liver.

Now I just play d5 openings tho

It's this, instead of going into fried liver, you going into Lolli attack with d4. Can get very chaotic and white is objectively better.

#Caro4Life

Scotch game in white, French defense in black

lowest effort meme lol I didn't even crop it

For White I would play Kings Pawn. For Black I would play Najdorf Sicilian