@kaputnik
should those who find it difficult to clip in/out persist in using clipless pedals?
Yes, as how will you get better? I've been clipless on all my steeds, both SPD'd and SPD-SL'd for about 10 years now and I still occasionally have to do the one legged dance, usually when something (cut grass as an example) gets stuck in the cleat.
The only way to get good at something is to practice, even something as simple as putting a foot on a pedal. :-)