There are many many instances where wearing something nice is a way to show our love for another person.
We would all dress up to go to a loved one's wedding, right? Wouldn't it be rather rude to go to your daughter's wedding in your raggedy clothes?
Id say the same for a funeral. We dress up out of respect for the mourning family and friends.
If a person feels that he can show respect for those around him by dressing up for them, than more power to ya, I say.
I think this discussion is starting to turn into a criticism of this particular church. The OP specifically states that the people in this church are all very nice. No one seems to have ever said anything to the OPer about his clothing, he is just making an observation about what most of the other people there are wearing. If the people in that church are ones who come together in like-minded fellowship, than who are we outsiders to judge them for that?
Carpinator,
I wanted to address one thing you said in your OP. You sound like you are making several assumptions about the people just based on what they are wearing.
First of all, you are assuming that they MIGHT only be still nice to you because you are "just visiting." Lets give the people the benefit of the doubt here, and I bet they'd be just as nice to you as a member as they would as a visitor. Becoming a member would mean you are now hopefully a faithful attender, and it will mean that eventually you will notice flaws and foibles in those around you.....but where would we go where this is not the case?
Secondly, you are assuming that they think you are a sinner because of your clothing differences. Don't assume things about other people's thought lives. It never ever leads to good....but usually leads to strife. Your assumptions make you act in a certain way, and it really isnt fair to assume that you know what other people are thinking.
After all, it isn't fair to think that just because someone is wearing a suit then they must believe that suits are the only Biblical attire for church. This is also you judging them based on their clothing.
Thirdly is the goatee issue.....most people I know do not have any problem with beards of any sort. However, they are simply not in a majority in America anymore, so the likelihood that a group of people will be clean-shaven is higher these days. I would not assume that this is a comment on their attitudes towards facial hair. In fact, Ive seen the goatee making a comeback, and when kept well they can be very nice looking.
In the end, I believe you need to separate your assumptions from what you have actually been told by people within the leadership of the church. Just because you "feel" a certain way does not mean that that is an accurate assessment of the attitude of the church people.