No, as already stated enough, diskspace will never be a problem for neither Bitcoin nor Monero. 20GB at BTC are nothing, that's less than one $1 in diskspaceYes Monero#s blockchain bloat is worse than bitcoins and at a similiar usage it will be around >10 times, but it will still be slower that Moore's law. And the bloat in CoinJoin-esque "anonymity" solutions like DRK is much worse, because a tx gets divided in hundreds of sub-tx. Stop ignoring this fact