Theseus
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See for detail http://www.phrases.org.uk/meanings/whats-not-to-like.html.
What's not to like/love
This phrase is a sarcastic way of saying that something has no good features. It may have begun as a form of praise, but I always hear it used to mean the opposite. ("Big deal!" has a similar history.) "What's not to like?" seems the more common version. I believe it originated with Yiddish-speaking immigrants in the United States.
In the UK, it is often used as a form of praise, which seems to be how it began in the USA in the 1970s, as far as I can discover. It hasn't been used here for so long, so maybe we haven't developed the ironic form yet.
What's not to like/love
This phrase is a sarcastic way of saying that something has no good features. It may have begun as a form of praise, but I always hear it used to mean the opposite. ("Big deal!" has a similar history.) "What's not to like?" seems the more common version. I believe it originated with Yiddish-speaking immigrants in the United States.
In the UK, it is often used as a form of praise, which seems to be how it began in the USA in the 1970s, as far as I can discover. It hasn't been used here for so long, so maybe we haven't developed the ironic form yet.