Hi Cat,
Please know that I am writing this with the utmost gentleness and respect. I understand how you would feel hurt by knowing that there are people out there who really can’t stand and are sometimes insulted by some of the compositions of these hymn writers, especially since you do have love for and enjoy playing that kind of music. It’s a natural reaction on either side, but some people feel just as sickened by that music as you have a sincere and great love for that music. I’m just saying that they have an equal right to express their absolute disdain of that music on these forums as you have the right to express your absolute joy in them. We can’t beg people to stop expressing their opinions and how they view things. It doesn’t make for good discussion and makes everything one-side and boring.
In terms of the opinion of wanting everyone to sing every hymn during mass. I respect and understand your opinion of it, but to force or to expect people to sing a hymn that is either physically sickening to them or intellectually, emotionally or theologically insulting (in their opinion) would make them be hypocritical to their own conscience. I wouldn’t want to be the cause of that. I’m usually cantoring, so I’m singing all the time and the music is always usually fine to me. But if I’m in another parish in the congregation, there will be hymns which I feel I shouldn’t sing according to my conscience. I’m not rude and I never try to make a point of it, nor am I focusing on the fact that the piece of music is insulting. I just either read along or I close my eyes and pray. Honestly, I’ve never thought of a person not singing along when I was singing as rude. No one that I know of have ever been rude about it. So, they don’t want to sing? It’s no big deal. I am sure they are praying in another way.
You brought out some good points as to why some parishes don’t sing. I don’t know if four-part harmonies written in the hymnals would help unless we start teaching our next generations how to read music. My husband and I both know how to read music and wouldn’t have any trouble, but most don’t and look at notes as a foreign language. So, the first thing is to provide proper music theory and reading training to the children if we want them to be singing 4-part harmonies.
If you haven’t already, and I think it has been suggested on this thread, I would suggest reading “Why Catholics Can’t Sing”. As a cradle Catholic and a musician, and having many musician colleagues who have worked in the Church for decades, it really does ring true to my ears. You don’t have to agree with all of it, but there is much to take in and say, “Wow! That is soooo true!!!”
Having worked in the church for a number of years now, I also think some of the reasons why some parishes don’t sing is if the musicians are less than stellar in their playing. I’m not saying that they have to be a J.S. Bach or a Felix Hell (although that would be ideal

ha!), but they do have to be able to keep a steady beat and rhythm and play to support the congregation. Some play like they are so wimpy or with no sense of rhythm at all. A cantor can help, but the organist/pianist or other instrumentalist is the real support for the congregation. They have to at least have that down, then remember not to drown the congregation with too much sound or abandon the congregation with too little. Also, know what tempi are best especially according to church and how the sound reverberates. Just last week, we had a substitute organist who seemed like everything was a race and didn’t feel like a prayer at all. And he played so loudly no one could hear themselves sing. Plus, in a huge Cathedral, when things are played too fast, the sound gets all mushy and you can’t tell where you are. My parents who were in the congregation and aren’t musicians (although my dad used to play trumpet in high school) complained to me afterwards about how rushed it all was and how they couldn’t really follow along because he played too fast and too loudly. He was a good musician, but just didn’t keep those things in mind or wasn’t used to the space. The same is the opposite if someone plays too slowly. Not everyone has the breath control of trained singer, so they’d rather just not sing. I don’t blame them. If I couldn’t sustain my breath and had to breathe continually after two or three notes, I wouldn’t want to sing either.
Anyway, those are my thoughts, and please, Cat, realize that I’m not trying to pick on you at all. I know you are very sincere and mean very well in your beliefs and I respect that entirely. God bless.