I think this type of thing happens to everyone at one time or another. Sometimes it's hard for me to get motivated to pack everything up and head for the range. Only to have to unpack it there, then back up again to head home. Then put everything away and clean guns.
In that regard it's a lot like boating. The actual time you're doing it it's great. But getting there, launching, retrieving, the clean up and maintenance required afterward takes a lot of the joy out of it. They say the 2 greatest days in boating are the day you buy it, and the day you sell it. Granted, guns are a lot easier maintenance wise, but after a while it all wears on you, and you tend to get a bit lazy and lose some interest because of it.
I'm anxious to get out and shoot now because it's been so hot here, I can't wait for the cooler weather to move in so I can hit the range again. I've been loading my ass off, so I've got plenty of ammo. Summers here are like January in North Dakota, just opposite. The temperatures keep you inside. Too cold there, too hot here. The heat does wear on you, and make you lazy, then you feel a bit guilty because of it. It's hard to stay busy and be productive in some way. The weather just makes you burn out too quick. The older I get, the worse it seems to get. I just take it easy, and one day at a time. Everything is temporary. Nothing stays the same for long. At least that's the way I try to look at it. Bill T.