yea I hear you! My elder sister rejected countless rishtaay before she finally decided to say yes to someone. Nowadays you have to be careful. I've heard of so many nice, religious girls getting divorced because the guys were abusive or taking some pills. And at the time no one confessed anything about how the guys really were. It's very important to do a thorough investigation of a guy before saying yes. The guy my sis is getting married to, he was interviewed for 1-2 months by my parents, and then by other aunties and uncles before being introduced to my sister. Masha'Allah he is great. I've also rejected a few rishtaay, some were even great, but only because I was involved with someone else. As far as your sisters goes, suggest people you trust to find some nice decent guys for them, but obviously take into consideration what they want in a guy and the qualities they don't want, and based on that suggest rishtaay for them. Tell your sisters appearance isn't everything, you have to look at the personality and how strong his imaan is. This is the stuff that matters. Tell them it won't hurt to talk to guys being suggested, they can always say no later if they don't want to go through with it. As they get older, it'll just be harder for them to even get rishtaay, it's better they start taking marriage into consideration, you can't be alone your whole life, at some point or another you will want to have a supportive husband, and kids to look after you when you are old.