I do like the idea storing the FIAT needed for taxes in the form of BTC - Its just hard not knowing exactly how Ol' uncle sam is going to treat the taxes on the sale of that as well as the volatility of BTC's value in FIAT terms right now makes it a little more uncertain when it comes to pay the extortion fees :)
Guess I have some math homework to work on :)
As for real estate investing becoming obsolete....I believe we will always need other people providing housing to others and as such there will always be a value to it... Given your profession, you understand as much as I, that there are people that simply do not know how to fix their toilet or leaky faucet.... Just as much as I couldn't fix a plane or space ship, but I like flying and would enjoy going on a space adventure someday...I would be willing to exchange "value" with someone that provides me with that opportunity.
Of course the value currently stored in real estate will be extracted over time as more people utilize Bitcoin to store their value....There will be an equilibrium developed over time but the initial transition is likely to be a bit chaotic...I tend to think there will be markets that will crash hard, markets that move slower, and probably some that don't budge much as they are in desirable areas or markets?
No matter what happens though - I know earlier bitcoiners will benefit more on a percentage basis but it will continue for a long time to come...