Thank you again for your inexhaustible patience and unremitting endeavor. I wouldn't help looking for your kind admonitions (in this case I hint at "advises", as well as " warnings, reminders, and even "scoldings".)
Tank you for your noteworthy tenacity.
In the end I understand now why I have to abstain from the usage of the word "gratuitous". I caught the most annoying meaning of this word, namely "unnecessary or unwarranted, unjustified", as in "gratuitous criticism" or "not required, necessary, or warranted by the circumstances of the case" as the way it is by its synonym "wanton" = "immoral or unchaste, lewd", "gratuitously cruel", "merciless", marked by unprovoked, gratuitous, maliciousness, capricious and unjust; "wanton destruction".