It all depends on what type of skin and hair you have. I have seen some folks being ridiculed recently (mostly on some other forums) for changing blades too frequently or for using pre-shave oils, etc. If you have thin, soft hair and very tough skin, maybe you can get by shaving with lava soap and using a dull blade for an entire year. Many of us have very thick, very coarse hair, combined with very sensitive skin, and we cannot.