If I may, I just dont get why do you think that the coin will not have a general use
Of course I do think it will! I was just pointing out that where most coins treat this as a primary design goal, zennet treats this more as just a secondary concern and doesn't sacrifice other goals for it, which *might* end up making it less suitable for such purposes, for the reasons Ohad pointed out.
Note the following fact: assume we're using regular POW based blockchain. since we use rapid payments for small amounts, we can use short block time (say 1min), which will of course increase the
probability of the risk of double spending, but the
expectation of the risk is low since we talk about small amounts. hence, buying a car with zencoins might not be as safe as people regular to.
it's one point where taking care of the certain use might make the coin inadequate for other uses.
say the coin is working just like Bitcoin, just with short block time, and an attacker could tamper the network for one hour. the loss for home pc will be no more than a few dollars worth, if not less than one dollar. This is an extreme case, of course, and might be even too extremely simplified to be possible.