Read the last post in that thread. You will know the reason. We gave him enough 'help' and I also think it is more than enough lol. No need to continue on that thread.
I never felt so, I mean when a mod close a thread, 99% of the cases there is a valid reason.
And you can always pm a mod or admin if you think a thread is closed without any reasons.
[Edit]
I see you are new to this forum. sorry in that case, I mean if you think my reply is kinda harsh