It's about time we stopped using titles - there's just no need and they're causing unnecessary hassle and wasting a lot of admin/management time.
We stopped using them in our firm a few years ago. Only one client even mentioned the lack of Ms/Mrs/Mr/Dr and they were just mentioning it in passing rather than complaining. Prior to that, idiotic complaints were far too common.
I know it will blow some people's minds, but we also stopped using Male/Female markers on databases etc. Just no need at all.
It was a data protection law change a few years ago that prompted it as one of the new rules/laws was that you should only keep and process data that you need to keep and process, i.e. every little bit of data used must have a purpose/requirement. We did a thorough review of all our databases and no one could come up with a genuine reason why we needed titles nor sex/gender for our clients, so we went through the databases, removed the fields if possible, and if not possible, changed the data within the field to be blank or n/a.
In the few years since we "cleansed" the databases, we've never actually missed having that data and never found that we needed the data.
Everything in our database, all forms, all letters, emails, etc., now use a simple salutation of initials, and/or firstname, and lasttime. Simples!