I have some trouble with the labels which are used here to describe people who don't profess to know what they believe. They seem to promote the idea that if you are not PRO gd, you are therefore ANTI - there is no room for undecided, unconvinced, still gathering data, haven't reached the appropriate life altering crisis, etc. This is coupled with the idea that believing in a particular philosphy is something you can just decide to do, on the same level as deciding what shoes to put on in the morning.
Perhaps some people can do that. I can not, although I tried it for about 35 years, until I realized I was fooling myself and that I had to find something that worked for me on multiple levels of belief - logically, emotionally, practically, and other ways I can't even enumerate.
One of the philosphies I tend to agree with says that labels are a trap. You can get very off-track defining yourself, or letting other people define you, according to labels. If you are comfortable with what you are, it doesn't matter how other people think of you. If indeed you have to answer for somehing down the line, it will be for whether or not you used the navigational instincts you were given for making your way in this world.