起诉人有提供证据的义务。

https://www.law.cornell.edu/wex/burden_of_production

The burden of production refers to a party's obligation to come forward with sufficient evidence to support a particular proposition of fact. The burden of production combines with the burden of persuasion to make up the burden of proof throughout a trial. 

请问你不找专家，哪里来的满足起诉条件的evidence？如果你有义务出庭的专家，尽管去告。否则专家一出庭就是一万元，你哪里赚得回本钱？