I told myself the day of my PPL check ride that I was done with ratings. From that point on, I was just going to fly for fun (which I've done).
Now, here it is two years later and I'm training for the CPL. The vast majority of my 200 hours are in an R22, but I decided to do the commercial in a 44. I've flown the 44 a few times, but I find it different enough to prompt me to polish my skill a bit before I've got a DPE in the left seat critiquing me every step of the way
Once I pass, I'll at least be able to accrue some 'free 44 time' flying weekend tours out of our home field and at regional air shows & festivals.
Written - done, 5 hours instrument - done, two hour night solo - done. Nothing left but a few hours of PTS maneuvers and the dreaded check ride. I'll be so glad when it's over.