Post Bitcoin mining.

[mnmShadyBTC]

What about when it is down to 12.5 bitcoin per 10 minutes? Will people still mine? 6.25? 3.125? 1.5625?

Transactions were supposed to become more expensive, compensating for reduced mining rewards.

Possible hard fork is increasing block size by 50% a year, so that will drive transaction fees down. 

The transaction cost should actually decrease over time, however the raw number of transactions should increase so the overall amount of TX fees on a per block basis should increase

[Elwar]

What about when it is down to 12.5 bitcoin per 10 minutes? Will people still mine? 6.25? 3.125? 1.5625?

Transactions were supposed to become more expensive, compensating for reduced mining rewards.

Transaction costs of .0001 bitcoins when there were 50 bitcoins per 10 minutes were worth $.0012 each.

A transaction cost of .0001 bitcoins when there are 25 bitcoins per 10 minutes are worth $.0386 each.

More expensive?