unfortunately, I still have not seen the information about why you need coins on your platform? and what currencies are accepted in the sale of tokens?
ICO's have become a legitimate way to raise capital. It's a lot like an IPO. You may not need a portion of the company in order to use their service, but it's a good way for them to get funds to actually make their service.
I thought the same way as you for a long time, if it doesn't absolutely need a token it must be a scam. That's just not the case though. Take Telegram for example, they had one of the most successul ICO's of all time recently and you really don't need a token to do anything they're doing. It's just a convenient and easy way for everyone to benefit.