Yeah hardcore bitcon geeks love to shit on altcoins... IMO most alts are useless, but there are some that make sense. There is one that combines cryptocurrency with distributed folding for medical purposes... There is also Litecoin of course, but as soon as ASICs show up, forget it. There's another scrypt based coin that is supposed to be truly ASIC proof (Litecoin could be if they wanted it to) so that may be where the GPU miners go once the difficulty becomes too much for them to be worth it. In that case, now would be a good time to start mining that coin
Or there could be cryptocurrency's "Facebook" where bitcoin is the "Myspace". I don't see it that way though, since it can be adapted to suit any changes needed. And the analogy doesn't really work since cryptocurrencies are products like websites.. they are more like the internet itself. A protocol for products to use.
There are plenty of alts worth shitting on, like all the pump and dump coins based on stupid memes, etc