Balancers, like Uniswap or others, are exchanges aimed at speculating and making money quickly.
There are lots of projects that tried to lure in people by offering high yields, which quickly diminished by impermanent losses (IL) when the price of the newly released tokens dumped. However, in more stable projects (Uniswap, Balancer, Curve) the token incentives can cover the IL, but these incentives are only for a few chosen pools.
I'd like to direct your attention to Bancor, which is trying to solve the IL issue by offering a single-sided token deposits into a pool and insurance against IL, when you stake your tokens for 100 days. It's arguably the oldest AMM (since 2017).