How much of a wuss am I? 2/4 hand

[Bremen]

Sorry for the hand written summary the converter didn't like the hand. Also I haven't played much O/8 so feel free to tell me how bad I play :0)

Preflop Hero is BB with AA82 with one suited A.

2 callers + SB to Hero who checks.

Flop: JJ4r
checked around

Turn: A
SB bets, Hero raises, 2 fold, SB 3-bets, Hero caps.

River: K
SB bets, Hero raises, SB 3-bets, Hero calls.


Should I raise preflop for value? It seems I always have to lay it down if I miss my A against large fields.

This is probably a stupid question, but how afraid of quads should I be? Am I too afraid of the nuts in this situation?