I used to do the same thing, until I saw slides ( https://stlab.adobe.com/wiki/images/8/85/2008_06_26_classes_that_work.pdf https://stlab.adobe.com/wiki/images/

I used to do the same thing, until I saw slides ( https://stlab.adobe.com/wiki/images/8/85/2008_06_26_classes_that_work.pdf https://stlab.adobe.com/wiki/images/8/85/2008_06_26_classes_... ) for a talk ( https://my.adobeconnect.com/p53888531/?launcher=false&fcsContent=true&pbMode=normal https://my.adobeconnect.com/p53888531/?launcher=false&fcsCon... ) that pointed out that explicitly making the copy makes it much harder for the compiler to do copy elision.