It burns my brain. Five thousand is an awesome number. It's half of ten thousand. Oh, how it tortures my OCD. The wife tells me I have more than enough. But five thousand!
No. NO. NOPE! I can't do it. I'd have to start digging into public domain works to reach that number. I technically have enough books to reach said number, but I've tried with my library to only put in authors I might actually read. I'm sure someday when I'm an invalid at ninety, and have lost the will to live I might even read the Twilight Series.