Someone berate me for not value betting this river

[Meraxes]

Live 3/6 8-handed
Villian 1 is a lagtard in the SB. Villian 2 is super loose, pretty passive UTG.

Hero is on the button with 8 [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/spade.gif[/img]

Preflop: 2 limpers including UTG, Hero raises, Blinds and limpers call.

Flop: (9 SB) 7 [img]/images/graemlins/diamond.gif[/img]J [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/club.gif[/img] (5 Players)
SB bets, BB folds, UTG calls, 1 fold, Hero raises, everyone calls.

Turn: (7.5 BB) 7 [img]/images/graemlins/diamond.gif[/img]J [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/club.gif[/img][J [img]/images/graemlins/diamond.gif[/img]] (3 Players)
SB bets, UTG calls, Hero raises, SB folds, UTG calls.

River: (12.5 BB) 7 [img]/images/graemlins/diamond.gif[/img]J [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/club.gif[/img][J [img]/images/graemlins/diamond.gif[/img]][9 [img]/images/graemlins/heart.gif[/img]] (2 Players)
UTG check, Hero checks!?

Someone tell me that's awful so I don't do it again. Comments on other steets welcome also.