Reason is this: When rewards drop to around 1.3 million BBP total, 1mag = 1(/1000)*1.3 million = 1300 BBP.
This means that it will take ~39 days to pay back your stake which I think is reasonable.
In fact, it is bad for myself personally because it is a lot of stake, but I think it is best for the coin overall.
EDIT: For comparison:
BBP/magnitude days to pay back stake
250 0.2 days
500 0.38 days
1000 0.77 days
2500 1.92 days
5000 3.85 days
10000 7.7 days
20000 15.4 days
50000 38.5 days
50000 still becomes a static 50 million lockup. For comparison we have 169 masternodes which gives a lockup of nearly 262 million. Right now total supply is 459 million. So that lockup of 262 million increased price from a consistent 10-20 satoshi to a consistent 25-35 satoshi with some higher peaks. I like staking to RAC because it will sop up supply, and it should still be affordable if bitcoin takes off whereas masternodes will become unaffordable while we still have a lot of supply to come. I can imagine a scenario where the annual returns are attractive on masternodes, but the price because of bitcoin makes them expensive and out of reach for most people, but they could still afford to either buy and hold, or buy, stake and crunch.
Can we introduce a vote to vote on stake based on MAG or stake based on RAC?