I've been using LogMeIn for quite some time as well and I am strictly a PC user. However there are many Apple apps that aren't ported over to PC, so why do you feel that LogMeIn is obligated to port their product over to Macs? I'm sure there is some complexity in porting over a program from one OS to another, hence the reason it isn't yet done.
I am in NO WAY trying to start a Mac vs PC flame war, but the fact of the matter is that they are two separate OS's and while I am quite sure that LogMeIn would very much LOVE to cater directly to the Mac community with every product that they have for PC's I'm sure that there are technical and economical reasons for not doing so.
Is that LogMeIn's fault? Why should it be? They created an amazing product for a certain subset of the computing world. Does that automatically mean they HAVE to create it for EVERY computer OS out there? OSX, Linux, BSD, BeOS, WebOS, Plan 9 where do they draw the line?