Then you won't be raising any money. It isn't unusual to see VCs insist they get more rather than fewer rights and preferential treatment options because they are later to the party and get to dictate their terms or they walk. That's why you in theory should always negotiate from strength, the weaker your position the bigger the chance that you will have to accept unfavorable terms.

Unless your company is a rocket ship already off the launch pad and accelerating to orbit, it's hard to make a deal that doesn't involve voting stock.