You could say the same for not learning Swahili (which I presume you don't speak) or going into Biology rather than computer science.

In other words, the argument from ignorance is useless -- reminds me of a very weak version of Pascal's wager.

Not only because he's still doing OK, but also because statistically I can assure you that the people I know who still have the LI account haven't gotten anything worthwhile out of it career wise.

Besides, the whole argument is oblivious of the notion of Opportunity Cost.