Chests and Champion Capsules

I'd like to ask a simple question: What's the point of putting one champion shard in Hextech chests if we already have champion capsules? Champion capsules:

1. are much easier to come across, seeing as how you get them every time you level up
2. can drop two to three champion shards that can be disenchanted to buy other champions On the other hand, chests:
3. are only available to be earned after waiting for about a week or opening your wallet and buying it from the store
4. need you to earn at least an S- on a champion that you haven't already earned a chest on
5. have the chance of dropping ward skins and champion shards, instead of an actual champion skin. If it's so much harder to earn chests, then why are some of the rewards WORSE than the rewards we earn for leveling up? If you want chests to drop ward skins and emotes, then make a chest that specifically drops only ward skins and emotes for the few people that would grind for them. I get that Riot wants to make as much money from you as possible by making skins locked behind a paywall make you feel a sense of pride and accomplishment for unlocking new skins, but come on, at least make chests drop a skin shard, and then if we're lucky, include a ward skin or a champion shard, not the other way around.