Or, I'm sure, its relative slowness. LMAX can do millions of transactions per second. [1] Bitcoin is doing, what, 3 TPS? And I don't mean 3 million, just 3. (I get that from ~1600 transactions per block [2] and 1 block per 10 minutes.)

Back when I was doing trading systems, my traders would have murdered me if my response time graph looks like the Bitcoin one does. [3]

[1] http://martinfowler.com/articles/lmax.html

[2] https://blockchain.info/charts/n-transactions-per-block

[3] https://blockchain.info/charts/avg-confirmation-time?timespa...