Altcoins will be finished when Titan arrives....Think about it.
Bitcoin will be finished when ASICs arrive.... Think about it.
Since you will be converting LTC to BTC, clearly, a scenario where LTC/BTC ratio will dramatically decrease is more plausible.
Mining with expensive rigs looks less and less attractive as a hobby.
I can play with my ants, contribute a few coins for the benefit of mankind, pay a small tax fee, etc.