ok lets give the OP something else to think about.
these 2 links
https://blockchain.info/charts/avg-block-size?timespan=30days -0.55mb blocksize average
https://blockchain.info/charts/n-transactions-per-block?timespan=30days - 1100 tx per block average..
this calculates to ~500byte per tx
(0.55mb / 1100=0.0005mb per tx)now imagine we stuck to a $0.03cent tx fee, no matter what (dont worry about how many satoshi's it may be for now)
at a maximum of 2000tx in a 1mb block limit. the maximum block fee total if every tx had a fee would be $60
at a maximum of 16000tx in a 8mb block limit. the maximum block fee total if every tx had a fee would be $480
at a maximum of 64000tx in a 32mb block limit. the maximum block fee total if every tx had a fee would be $1920.
so people if you want to know how much pay you will get, when mining bitcoin is dependent only on fees and not reward.. now you know the maximum reward
so yea as bitcoins price increases and tx fees end up being 0.00000001 as the 3cent equivalent value, just remember that the total payout per block solved will still be limited.. to under $2k per block if tx fee's are 3cent each.
but for now, just enjoy the 25btc reward valued at $8000 per block
and next years 12.5btc reward, hopefully valuing bitcoin at $640+ to keep inline with $8000 per block reward
and dont worry so much about fee's as they wont become an important payout for decades, which is when farms wont be concentrating on mining and it will become more decentralised where handfulls of hobbyists are sharing the $2k/10 minute payout