Hi everybody, first excuse my english.
Here's my own experience. When i was about to be baptised more than 10 years ago (i've grown up as a JW), while i had the interviews with the elders (you can call it "questions" or whatever you want), i told one of them (cobe) that i didn't want them to give me any privilege (mic, praying...) and he told me that every brother have to do it one day, like an obligation. So in the first time he left me 3 month without doing "mic" and 6 month before pronouncing my first public prayer.
Several times i refused to pray at the meetings, book study and service meetings, many bros and sisters found it odd but i didn't care of what they thought.
If i had bad behaviour or thought (bad attitude toward somebody, arguing with somebody most of the time my mother) before the meeting or if i wasn't in a good mood i politely turned down the prayer with no explaination.
Praying is supposed to be a sacred action so somebody shouldn't pray publicly with a bad conscience But as we know, some actions or sins are sometimes repressed hardly and people tagged or shunned, so it can be hard for brothers to avoid they aren't well disposed to perform some assigned tasks.
The second thing is that i'm not myself when i pray publicly, i couldn't pray 100% in my own words and expressions and with all my heart because you all know that everything you say, every word you pronounce is sometimes spied or interpreted by somebody. So it' hard to pray publicly the spirit completely free.
I've always thought that praying at the meetings shoudn'd be given to anybody but to someone whose purity and loyalty are comfirmed