Very similar circumstances here: amateur photographer, print infrequently and at long intervals, finally decided I wanted to do it myself rather than continue to turn the job over to a commercial lab. I purchased a P800 in August and have only used it twice, on the second occasion after an interval of over a month. Worked fine when I again made some prints the other day — no sign of any clogging problems. By default, the device goes into power-saving mode after a few minutes of inactivity so just I leave it on. Of course, the long-term viability of this approach remains to be seen. I selected the P800 based on (1) the early reviews and (2) the reputation of the 38XX series. I did not buy the roll feeder, but I wanted to have the option.
I was reasonably happy with the results I was getting from the lab I used, but I couldn't properly soft-proof because they didn't provide printer-paper profiles for their environment: they had their customers submit TIFFs in Adobe RGB and the printing technician did the soft-proofing. So it was a bit of a crap shoot as to exactly how the finished product would turn out. But the real reason I bought a printer wasn't that, or the lab fees — given the price of ink and paper (including the fact that I have to eat the cost of any failed efforts), I'm not sure I'm saving any money by making the prints myself — but to reduce the psychological threshold for printing. In the past, I only made a print if I was sure I was going to frame and hang it, or give it as a gift. Now, if I wonder how a particular image would look printed, I just try it.
As an aside, I'm still waiting for somebody to manufacture a very thin, wide-gamut, extremely high definition, affordable large square monitor I can hang on a wall. A well-made, detailed print is a pleasure to look at, but mine have to compete with my wife's art collection for wall space in our house, and that is definitely a losing proposition. . . .