I like going to Disneyland, but:
1) I live like 20 minutes away
2) There's free parking at Downtown Disney
3) I have a yearly pass
4) I only go in the evening, after 9 PM
If you show up after the last fireworks, the park is almost completely cleared out. You can show up, ride 2-3 things, have a corn dog, and walk around having a good time. If you go during the day you are distinguished mentally-challenged and may not live to regret your decision.