When it comes to fixing computers, there are a lot of people who think they know an awful lot more than they do. In actuality, they know just enough to cause quite a bit of damage.
I figured out early on that I was the same way with individual equities, and that my level of knowledge was unlikely to increase. For that reason, I index. I do have small amounts in GOOG, RAX and BIDU (having just sold my position in MAKO) but as I sell my small positions in these stocks, I will not be buying more.
Ownership of individual equities is just not for me.
ER, for all intents and purposes. Part-time income <5% of annual expenditure.