Is 5000 books very many ? I can't tell how many books I've read since I was 6 and read Lotr, it might be in the thousands I guess ? But what is "many books" ?

Is 5000 books very many ? I can't tell how many books I've read since I was 6 and read Lotr, it might be in the thousands I guess ? But what is "many books" ? Some books are 30 pages long and life time deep.