[daotoad]

That's because we don't value QA in the way that matters.

If you're a talented SDET, you're probably also, at least, a good SDE.

If you'll make more money and have more opportunity as an SDE, which career path will you follow?

[theLiminator]

Also, for most people passionate about software, they'd rather be building than testing, especially if pay is at least equal.

[MoreQARespect]

Testing is probably my favorite topic in development and I kind of wish I could make it my "official" specialty but no way in hell am I taking a pay cut and joining the part of the org nobody listens to.