How do you feel about handing out surveys in the library?

I just handed them out for a friend the other day, it was required for a thesis. In the university library, I felt that not everyone was happy to help, but most people were quite nice. I was as sincere as I could be, and repeatedly said I was sorry to bother you, and thank you, etc., but I was still a little embarrassed. But it had to be done. I send out questionnaires, and if I see that some people are listening or something, I'll bypass them, and if I'm taking a break to browse my cell phone, I'll try. Personally, I don't like to send out questionnaires this way, so I'd rather send out red envelopes online to attract people who would voluntarily fill out the questionnaire for profit. Only, now the channel is not so convenient, and the questionnaire may be difficult to limit the sample.