Shrug. If you gotta get rid of something to get something you really want then I'd say...keep it and get the something else too!!! (You can do a search on 'wife' and see the incredible debates this has sparked in the past. No need to resurrect them here and now.)
(You really don't want to become known as 'the guy that sold that really nice 19-4 4 inch blue S&W'.
Somebody here has a signature line that says never get of any of your guns and I'm kind of that way too. Plus the S&W 19 really is kind of iconic.