Without wanting to get flamed, I just want to say that I see too much discussions here about what lens, what camera, what gear etc here on the forum. Its nice talking about the gear but to be honest, if we are talking too much then it means we are not shooting.
The bodies and lenses are there to be used on the field. I just got back from a 6 weeks backpacking to SE Asia. Took all the gear I built up over the past few years, that is, my 5DII, 16-35 II L, 24-70 L, 50 1.4 and 70-200 IS. I used to talk a lot about my gear, thinking what to use to shoot a particular afternoon stroll. But when I was out there, I just had my camera and 1 or 2 lenses with me for the day. The lenses got dirty, camera survived a typhoon, and at the end of the day that is what it is all about. The gear is there to be used on the field, out there. And I shot what ever I saw with what ever gear/lens I had with me at the time. Forget about deciding whether you need the 50 1.4/1.2/1.8 or 24-70 with or without IS, when you are out there, that is the least thing you think about. You just shoot. And you shoot with what ever equipment you have with you. And yes the lenses will get dirty, dust will get inside, UV filters might crack, but afterall that is what shooting is all about. I also had my compact digi cam in my pocket. I got some great shots without my 5DII. You dont need the latest lens with a flat MTF chart with IS and the 5DIII, its not all about the equipment.
So if you find yourself talking about a dust speck on the inside of your 50mm you bought 2nd hand from ebay and thinking if you need a 1.2 or what case/bag you might need just for that one time afternoon garden party next week, I really think you are talking too much, and not shooting enough. So go out there and shoot. Get your hands dirty, get your gear dirty and only then will you get some great photos.
You seem to be bursting with enthusiasm after doing lots of shooting. That's nice.