Traveling from Britain to Spain by Ferry – Is It a Good Idea?

Do you think it’s a good idea to travel from Britain to Spain by ferry? I’m considering it as an alternative to flying. I’m interested in the journey itself, maybe with a bit of scenic experience along the way, plus it would give me a break from the usual airport hustle. Has anyone done this route before? How was your experience with the journey duration, on-board activities, and comfort? I imagine it’s a longer trip than flying, but the idea of relaxing with a view of the ocean for a day or two sounds appealing. What do you all think – is it worth it?