Halloween for me has some sort of aura to it that makes me enjoy it. I don't look at it as some sort of opportunity to get free candy, but as a night where we as humans can express ourselves in non normal days. Putting up tombstones in ones yard isn't normal during eleven out of twelve months of the year, but when Halloween rolls about, we can get weird with it. Seeing people excited, dressed up in creative and new clothing adds, as you can't normally dress up as something like that without turning a few heads. The air of mystery and nostalgia just makes it fun, and it's happy go lucky nature just makes me smile. No other holiday has an attitude like Halloween, which is why I love it. Your attitude towards Halloween also might depend on your age, with children and adults enjoying it more than teenagers, but of course, that all depends on your own life too.
I feel like I should mention some of the holidays that do deserve some flack; Presidents Day, Arbor Day, Columbus Day, Valentines Day. and St. Patricks Day.
I also like looking into an equation I made that shows how good a holday is. The amount of plants need to be killed in order to properly celebrate a holiday are directly proportional to a holidays epicness rating squared.