I was a member when a previous employer funded membership. I resented the hoops I had to jump through to 'get in' and then derived precisely zero benefit for about 3 years of membership except occasionally putting 'MBCS' after my name when I felt it might help (about once a year). When I changed jobs I let membership lapse (I certainly wasn't going to pay) and the 'reminders' from the membership department were many and annoying. It's not an organisation I'm proud to have represent my profession.