In answer to your question, no.
If you have a computer on already, and if your electricity consumption increase is not your problem, then it won't hurt to try things out.
If you go about it as 'finding stuff out and trying things' rather than a 'get rich quick' then you won't be disappointed.

Have a look at the parameter 'difficulty' for bitcoin, and how that went up after the ASICS arrived in late 2013.  The bitcoin price in mid 2015 is about right for a commercial enterprise running ASIC miners on "cheap" electricity and cashing in their bitcoin as early as possible.  That chases away some of the other mining rigs to seek the best paying altcoin, so some of those get ASIC attention too.  You can compare sha256d altcoins by their present reward divided by difficulty.

Perhaps profit is the wrong goal to seek.  Disestablishment of the bank-led catastrophicly bad double-or bust economy whilst protecting transaction banking for all honest productives worldwide is closer to my reason for wanting bitcoin to go well.  My collecting a few from ASIC mining is a by-product.