hahahaa, Mr. Gloom and Doom (aka sdc-have-no-tech)

Clearly you have not stayed abreast of major changes that have taken place in the cryptocurrency industry over the past 9 months.  At many places where BTC is accepted very many 'alt coins' are also accepted.

As for your: "no big store or company even considered any altcoin"  comment, firstly, CCs of any type need not measure themselves in terms of if a "big store or company" would accept them, but let's say that was the measure of success for currency.   99% of the stores (big or small) in the USA won't accept any other currency other than USD, does that make the EUR weak, GBP useless, or Yen insignificant?  Of course not, that would be foolish to contemplate.  You know you can go into just about any establishment in the USA and plop down a credit or debit card to buy merchandise using your home currency -- well that 'home currency' could be USD, GBP, BTC, or EMC2.

As for: "so, altcoin=useless=scam"  checkout this thread: https://bitcointalk.org/index.php?topic=273148.0 [ALT coin Stores and Services List]

Cheer up dude, read more, type less you will be happier.