Just because you paid for the lead, it doesn’t mean that you should get emotionally attached to each one. Buying leads is, and always will be, a sorting process to find your next business partners. If you are terrible at the phone, either, buy MLM leads or get a job at a telemarketing company. Gaining experience on the phone is worth its weight in gold. Every big recruiter or enroller is good on the phone. Most of them used to be terrible but experience made them better. 

The real selling point for MLMs is that distributors can make money in two different ways. The first is money made from commissions from direct selling to consumers. And the second way to make money with an MLM is from the commissions made from sales of distributors below you in the pyramid (these are sometimes referred to as recruits or downline distributors).
I agree with you that much of the industry is flawed, but what about an MLM that has a service rather than a product such as electricity. It’s not like that could go out of style or that once you buy it you don’t need it again or that your monthly supply is too much and you’re going to stop the monthly subscriptions. I can honestly say that I cannot stand most MLM companies because regardless what you believe or how much you like the product, if you have to try to convince someone else to use it then inevitably the system is flawed and eventually your residuals will dry up. Electricity though, that’s different in my opinion, no one has to convince me to use it, it just comes by default. Find me an MLM that is not selling so much as showing someone an alternative to what they already have to pay and I’d be interested.