Just a few remarks to the first answer.
I do know several witnesses who attend esp. funerals.
I also know of witnesses attending church weddings, although that is more rare.
Personally, I would not object to none.
I did attend church funerals while being an elder.
I even appreciated the sermons when they were good.
Being interested in history and architecture, I have visited
dosens (if not more than a hundred) of churches in various countries.
Interstingly, while being on a witness-only tour once, a church was visited.
1 third declined entering the church, whereas the rest did go.
No one made a fuss about that.
Generalizations do not do any good.