is betting in these situations bad?

Dealt to younghovz22 [ 5s Td ]
desdat calls [$0.50].
paulherber1 calls [$0.50].
SpiritRoq folds.
caaaaaw folds.
shigshag calls [$0.25].
younghovz22 checks.
** Dealing Flop ** [ 2d, Ac, Th ]
shigshag checks.
younghovz22 checks.
desdat checks.
paulherber1 checks.
** Dealing Turn ** [ 6h ]
shigshag checks.
younghovz22 bets [$1].
desdat calls [$1].
paulherber1 folds.
shigshag folds.
** Dealing River ** [ Tc ]
younghovz22 bets [$2].
desdat raises [$6].
younghovz22 calls [$4].
desdat shows [ Qs, Ts ] three of a kind, tens.
younghovz22 doesn't show [ 5s, Td ] three of a kind, tens.
desdat wins $15.20 from the main pot with three of a kind, tens with queen kicker.