I might be new to the AAS world and not have a vast knowledge of everything yet, BUT I do know that its a FACT that injecting intravenously can cause serious side effects.
I couldn't care less if someone aspirates or doesn't aspirate. That's up to them. If you're experienced and know what sites always work well for you then fair enough. But for me, especially as a noob to all of this, I think it would be stupid to ignore facts and take chances. That's exactly why I'm always gonna aspirate.
Agreed especially when the time involved is a TWO SECOND difference. A novice will be much better off if they learn the correct technique first and deviate thereafter.
Some runners "take chances" while some don't, but knowing the number one source of an pinning related infection is sloppy technique, leave the farm entirely and eventually you'll get burned IME.