I think at this point I vaguely remember disliking begin / end instead of { / } like in many other languages when I just started to learn Ruby. This was one of the small annoyances for me back then with otherwise great, even life changing experience with Ruby and it’s syntax.
Funny thing it stopped to annoy me very soon. The brain just filters it out very easily as just a structure of the code not related to the “real” code itself. I guess brain is really good at noticing what’s important and filtering out “unrelated” stuff.
In fact now when my eyesight is not so good anymore having end instead of } is helpful for me in terms of being easy to spot the code structure.