With practice, getting a good, nick-free, shave with a double edge safety razor can be done quickly and without mess. It takes me less than 5 minutes to do a 2-pass shave (with the grain and then against the grain) using shaving cream and brush in bowl. Using shaving gel out of a can, it can be done even faster. Of course, getting a pro shave with a straight razor is a treat when you have time and don't mind spending $20 and up. To me, shaving is a pleasure and relaxing, so I like to do it myself using the right tools and products that are not needlessly expensive.
Does everyone have to shave against the grain? I know I get ingrown hairs with regular razors doing that.
Reason I ask is because I've been wanting a safety razor.