Ehh not really XP was a great Windows OS for the time it came out.

For the entreprise users it was mostly the same as Windows 2000, a great OS released just a few months before that was much better than NT 4.

For the home users it was a move away from the old 9x kernel line and into the NT kernel line, which was infinitely better.

XP's problem was that with Longhorn's delays and then Vista sucking so much, it took until mid-2009 for a suitable replacement to appear, and by then XP was really outdated. But at the time it came out ? It was great.