Judy54 I think your post resonates with those of us brought up as catholics, a religion that was so hard wired into me I know I will never fully shake it off. As I get older I find myself being simultaneously angered by it and drawn back to it, I suppose because it's so intrisically tied up with my family and upbringing, not that I was happy with it at the time, but I do get the urge to revisit some of the rituals as I get older.
We have a town in mind that we may move to in the near future, we visit it often it's some 30 miles away from where we live now. There is a beautiful parish church (CofE) that is pretty central to the town, and because we found out one of the romantic poets of the early 19th century had been associated with that church we took the opportunity to look around it a while back. It was lovely inside and I said to my husband I'd definitely come here for carols for example, which wouldn't be a problem for him because he's not a catholic. We got talking to two ladies at the church who were regular members of the congregation, they told us quite a bit about the town and the history of the church, both very friendly and welcoming in a non evangelical way, it made me want to certainly drop in there from time to time if I were to become a resident of that town.
Although I haven't visited the catholic church in that area, I've been on their website, I was somewhat put off by their overt pro life campaigning, I think they were trying to arrange some sort of petition at the time which I found quite alarming. Whilst I appreciate that stance is part and parcel of their ethos, I certainly don't subscribe to their teachings on the matter, personal choices/dilemmas that concern the invididual are none of my business, I'd hate that to play a part in my becoming part of a congregation.
I think you should go with your gut feelings Judy54, although if you had a schooling anything like mine, the nuns at my convent explicity told us catholics, don't enter CofE churches, or any other Christian denomination for that matter, unless you have to for a wedding or the like. It's hard because that subliminal prejudice is planted there at such a young age.