It depends on what the overall makeup of your wardrobe is. If you've got 32 Creeds and 3 non-Creeds total, that's fine...
If you have 32 Creeds and 100 others, then God knows you'll never finish those off. It might be too many, but if you have the money and interest, then...go for it. Buy and love whatever tickles your fancy. It's entirely dependent on the number of Creeds you like. I have 7, but probably like more than that...It takes a lot of sampling to get through the whole line. Of course if you don' like any, zero is enough. I like all YSLs, so I need 'em all. Not so much with other houses. Again, totally subjective.
By the way, Creeds have an incredibly short shelf-life. Most retailers will throw away their old stock 'cause it just doesn't sell. God help you if you get an old bottle! Usually, a Creed will stay fresh for 3 weeks from the date you open the box. If you can't finish the bottle within this "freshness period", throw it away and buy a new bottle!
You can readily identify a Creed-gone-bad by its characteristic ambergris note. Most people follow the Ambergris Rule of Thumb..."If you detect it, reject it!".
Fortunatley, all Creeds are budget-priced to counter their brief longevity.