If u can, have both
If not, a house would have to come first before your cards, like Leon said " you can't live in your cards"....
But if ur half way comfy, and basically don't need an "extra" house, or your doing fine making your mortage payments, then why not collect/invest in vintage???????????

....if u don't wan't to deal with investment renting, then my theory is collect/invest

....
like antiques=rarity and condition...
i go with rarity, that supercedes condition unless u can afford both inmho...
collect rare, qaulity, desirable cardboard....
i have only seen my t206 rarities appreciate since 1998

at exceedingly crazy rates....
i don't know, but i think the trend is keeping up with wag pushing the investment/collection

...
but if your not into t206, there are other issues ....some are too are too volitile...
i love ojs, as a second vehicle, but unless collect the rareer ojs, the commons remained stable...anything 19th century seems like a safe investment also, mayos, ect
i got my quarterly 401 K statement and almost cried the other day, and hasn't gotten that much better over the years, changed the investment mix / diversification doesnt seem to matter either

the "investors know what they are doing"
(please excuse me ,old business major here

)
I don't care what anyone says, the rare unique desirable cards(in any set, that would be debated in another thread) seem to , dare i say it, recession proof
cardboard is only worth what someone else is willing to pay for it, like anything else in this world.....and if it is rare and desireable enuf, the investment takes fruition....like a small entity,
as long as there are individuals with moola, the desireables will be in demand..
simple economics=
supply and demand....
you would have to take care of maslow's heirachy of needs first and foremost, if you are comfy at the level you are at , then why not collect/invest....

cardsare very liquid( also as leon stated)
collectors are going to cringe when they read what i wrote about collecting as an investment, but these are different times, and these maybe alternative investments for many, instead of the traditional ones...
i always wanted to buy gold years ago, but never did.....that to me is a good investment....education is a good investment.....1988 topps might not be
i like real estate, but i am obsessed with t206
Summation:
COLLECT TO INVEST IF YOU ARE WORRIED ABOUT It, it's not far fetched .......
sell if in trouble...
sell your freak t206 to me is so desired??
peace
johnny