ok, here's my take on the topic: is c4d overpriced? yes, a little. are some of the features outdated? most certainly. do we need plugins for certain tasks? we do, but really not THAT many. and since r17 you could also treat houdini as a plugin and then you really only need one, and it's not even expensive. and in other packages you also need plugins, just for different tasks. to me it often sounds like some people just want to have everything just for the sake of having it, without actually having a real use for it. just so they know "if i would need or want to do this or that in the future, i'll be able to do it with c4ds onboard features".
for day to day work cinema actually does a great job. and i do a lot of different things with it, mograph stuff, character animation, product vis, sometimes vfx. what makes it shine IMO is productivity and ease of use. whenever i talk to people using maya or max they make a big deal out of relatively easy tasks where i'm thinking "hey, i could pull that off within a couple of minutes or hours"... people often seem to forget how cumbersome other packages can be and how intuitive c4d is in comparison. when i was exploring c4d for the first time a couple of years ago i was amazed that i really could just explore the software by myself, without having to follow tutorial after tutorial step by step. sure, i also followed some tutorials, but i was also able to figure out a lot of stuff by myself and come up with ideas to solve this or that problem and really enjoyed that it's mostly self-explanatory. IMO the most artist-friendly package out there.
and don't forget stability and how frustrating it can be when you're working in an unstable environment. and how much time it can swallow.
even though i think the initial buy-in price is a little high, to me c4d is worth every penny and i still enjoy opening c4d every day. if i'd have the suspicion that the grass might be greener on the other side, i'd just go over there and take a look.