As would I; but there are so many books that one needs to refer to if serious work is to be done, and there is always the rent to pay. If it's something I'll need to consult frequently, I'll print it out: that's usually cheaper than buying at the 'antiquarian' prices charged by so many dealers for items they think ought to be expensive because they appear to be rare. I've paid those inflated prices often enough, and I don't regret it; but if there's a cheaper alternative then sometimes it must be taken.