I can honestly say that in 40+ years of amateur astronomy I have never lost the passion for it.
I find that if one area becomes tedious or dull I shift my focus to another.
For the last 12 months I have simply gone back to the basics and returned to visual astronomy.
I had been doing astrophotography but I hit a wall with trying to get my head around the processing part of it. So I decided to have a break from it and just enjoy the wonders of the sky visually. I will go back to photography and start from scratch with fresh eyes.
I have even thought of trying some sketching for a while and with my artistic ability this could be very interesting.