using wordpress primarily on pc

Hi, was looking for some advice here. I used to use Livejournal for my own personal journal but after using wordpress on a business site for a few months I’ve come to love the software and how the blog set up is with this. Has anyone ever simply used wordpress on their pc for a personal journal – is there any downfalls I’m not thinking of in advance? Reason I was thinking this is because my personal journal can be somewhat vulgar since I can be a sort of “out there” person, and since I want a personal journal I simply type what I think and it may not be appropriate to have it posted on the web in case of people finding it and becoming easily offended. Because of that concern, I’m not sure getting my own webhosting for wordpress would be a smart investment. I already have a test set up with Wamp from when I was playing with blog designs, but any flaws in permanently using it strictly on my pc or would anyone have any better ideas for me in this situation? I’d really appreciate the input- thanks much!