Anyone just buys all the stocks instead of the ETF?

I was looking into RSP, S&P equal weighted index ETF. It being equal weighted made me think it would be relatively easy to setup up for myself just for fun and save the little fees. Since trades are free and I can do partial shares, I could just buy $10 of each company in the S&P in its own account for $5000 and I could rebalance when ever I feel like it (I like fiddling with this sort of stuff). Anyone else ever do this or something like this? It would be way easier to do equal weighted

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