Although there are always times someone won't trust you because of your age, gender, etc.

Do you rent Coed or gender specific sort of majority wins or which gender has stayed longer? 

I agree it's pretty gross in terms of sexism, but I hope it's changing as people realize that gender or orientation has nothing to do with REI knowledge and know-how.

This can be adjusted for M/F and gender, because fact is everyone can relate to relationship balance of hotness vs craziness, and most would land on a "7" as the good balance.

My thing is should I do all same gender homes?

Of course you should not discriminate by age, race, religious or gender, even age.

@MarieChele Porter#1 not all those that showed up will apply#2 you don't have to let to the opposite gender if they share a bathroom with you (maybe you already knew that)#3 use a merit system, whoever gets in their application first will have preference (assuming all else the same), having a roommate who is good at following through on their promises and takes care of responsibilites in a timely manner will do you well.

If they won't answer, that's an answer itself.)Please note that you cannot discriminate against any number of reasons that are found in fair housing, including familial status, race, gender, sexual orientation among many others.Write out your criteria and do not deviate from it.

The reason I recommended noting that a replacement tenant was moving in immediately was to document that you weren't letting "male tenants" get out of a lease early with no penalty - and then later you get hit with a discrimination claim because that person was female, another race, gender, whatever. 

Have to agree with @Justin Tahilramani: age, gender, and experience are irrelevant, if you are not comfortable dealing with this tenant get a PM in there to do it for you.