I have been very honest with people about my use. I dont' ever lie about it. Many times when you lose friends or in my case when I am pissed at my husband it is about dishonesty,not the drug.
I have only lost a couple of people in my life because of my choice to smoke, but they all drank like crazy, so it wasn't a loss to me. The judge me but not themselves. Their excuse was mine was illegal.