If you could have got through hundreds of pounds worth of brown/white in the time it takes to watch a film then I would say you're getting seriously ripped off.
As for the addiction potential of crack v nicotine, the only thing I can add is that I've successfully given up crack, but have never managed to kick tobacco. However, if I had to stand waiting in the pissing rain for hours to meet some dodgy cunt who was going to charge me a tenner for a single roll up, then no doubt I'd probably find it easier to give up cigs. Crack doesn't cause physical dependence, but it does cause compulsive behaviour which is reinforced by the ritual of scoring. There are zero withdrawals, just psychological cravings. These quickly subside. Tbh, I found the taste caused more cravings than the actual effects. I couldn't get that taste out of my head for several days - but that also soon dissipates...