I always found the large apple watches (at least the recent ones) too large/chunky for my taste. I prefer the look of the smaller watches on my wrist, although in the past, the small apple watches have been just that little too small.
The 42mm is the perfect sweet spot for me. I really can't imagine wearing the larger one - this is plenty big enough for me.
Here are some photos including some comparisons between the series 6 40mm and the Series 10 42mm.