To firstrazor :
Thanks a lot for your C&C and your input. It means a lot to me.
Yes, you are right, some night shots I didnt use tripod. Honestly I prefer use tripod if it is possible (because with tripod can make photos with the longer shutter, more steady / not so tilting, can shot with lower iso to reduce noise appearance, reduce the risk of blur caused by shaking). But sometimes i just left the tripod at home because at night i only walk for a while (not so long, when back from office) and take some photos that I think could be interesting (sometime the result are far for interesting too
hehehe). If I find something is interesting and i plan to go + to take the photos again in the next time, that might be better for me to bring tripod along with me, or I already plan to take at some kind of spot, then I bring tripod.