"When the weather's nice, my parents go out quite frequently ..." — J.D. Salinger quote meaning

When the weather's nice, my parents go out quite frequently and stick a bunch of flowers on old Allie's grave. I went with them a couple of times, but I cut it out. In the first place, I don't enjoy seeing him in that crazy cemetery. Surrounded by dead guys and tombstones and all. It wasn't too bad when the sun was out, but twice—twice—we were there when it started to rain. It was awful. It rained on his lousy tombstone, and it rained on the grass on his stomach. It rained all over the place. All the visitors that were visiting the cemetery started running like hell over to their cars. That's what nearly drove me crazy. All the visitors could get in their cars and turn on their radios and all and then go someplace nice for dinner—everybody except Allie. I couldn't stand it. I know it's only his body and all that's in the cemetery, and his soul's in Heaven and all that crap, but I couldn't stand it anyway. I just wished he wasn't there.