|please don't take it as attack on you, but I've read everywhere that RAID 0 makes your HD runs faster, faster reads and writes|
Experience counts for more than theory. You wont find many on this site that have more than a few years experience advocating RAID 0.
Ten or fifteen years ago it might have take five seconds to write a file to disk. RAID 0 could have shaved 50% of that time, two and half seconds, a noticeable improvement. Today the same file could be written in one second. The same 50% only represents half a second. Is it worth all the hastle for half a second and in most cases much less.
The overheads required to manage RAID 0 wipe out any time saved with simultaneous writing. That is why I said there might be an advantage with extremely large files. The overheads are the same regardless of file size. The larger the file the smaller the percentage of time the that is needed to write the file.