I'm not sure why you think your personal preference is optimal in any way. I hated the short clips on your holiday video, and couldn't help thinking that the actual problem here was your (stated) inability to hold a camera steady. I like vine's 6-second clips OK, because that's long enough for one complex shot or 2/3 simple ones. Films and TV often use much shorter shots, but doing so involves preparatory context-building.
Short shots without context are just confusing and frustrating because there's no prior context or established line of action (for example someone on screen left fires a gun pointing to the right, cut to someone being hit on screen right - part of the art of film is to lead the eye around the screen smoothly from shot to shot).
I'm not sure why you think your personal preference is optimal in any way. I hated the short clips on your holiday video, and couldn't help thinking that the actual problem here was your (stated) inability to hold a camera steady. I like vine's 6-second clips OK, because that's long enough for one complex shot or 2/3 simple ones. Films and TV often use much shorter shots, but doing so involves preparatory context-building.
Short shots without context are just confusing and frustrating because there's no prior context or established line of action (for example someone on screen left fires a gun pointing to the right, cut to someone being hit on screen right - part of the art of film is to lead the eye around the screen smoothly from shot to shot).