Are there any online dating sites that are actually good - not full of chumps looking for cheap dates & sluts willing to sleep with anyone?

I've tried dating sites on & off for years. Always never more than a day or two because I get tired of expectations people have for cheap easy hooks up... and the most annoying thing is in my "profile" and pictures there's NOTHING to imply I'd be interested in such.
Are there any online dating sites that are actually good - not full of chumps looking for cheap dates & sluts willing to sleep with anyone?
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