Was there sarcasm? Yes. But you were lucky in that it could have been (much) worse.
Many on TN are tired of reading yet-another-post-asking-for-help but not providing even basic information. Your post read as if from an end-user, not a tech.
For example, you were asking for help resolving a BSOD, but you didn't even provide the stop code! Nor did you provide any supporting information such as the OS, whether the BSOD just occurred or was an ongoing issue, whether the failure occurred in safe-mode or with a live CD, etc, etc.
Also, you reported checking only for hardware issues, but many BSODs are caused by software problems. And doing a N&P to "discard software issues" is generally not going to make your customers happy.
Sorry to be blunt, but the "lack of professionalism" rests on you.
Now, use this incident as a learning experience. We've all started at the bottom and made mistakes. Being defensive doesn't help. For starters, take a look at
http://www.technibble.com/forums/showthread.php?t=1246