I guess people keep paintings because they think they're valuable, either in money or feelings. If it's an original painting and the artist is famous, it could be worth something and might increase in value, so it makes sense to keep it. Also, a painting might have been passed down through the family, making it sentimentally valuable. Some families might even keep a painting that's not very nice to look at, simply because it's been in the family for a long time.
我猜人們保存畫作是因為他們認為它們有價值,無論是金錢還是情感。如果是原創畫作且畫家出名,可能就有價值,並且可能增值,所以留著是有道理的。此外,一幅畫可能已經在家族間流傳,使得它具有感情價值。有些家庭甚至可能會保存一幅外觀不太好的畫作,只是因為它在家族中存在已久。