Do these make a 30 something look like a senior citizen?

I bought these because of my Plantar Fasciitis and I needed something to wear around the house because I have hard floors throughout. I have no intentions on wearing these outside my house and I guess that's saying a lot considering I am a senior.

Would these work for wide feet?

I believe they do. I have wide feet and they fit comfortably.

which insole do I use? Are you suppose to use both at the same time? or can you switch depending?

I have plantar fasciitis and these shoes kill my feet. I have worn them twice each time trying one of the included insoles. Neither one feels good on my feet. Plus, they are too wide on my feet which makes my feet look huge. I wish I could return them.

Are these men's? They are so wide and look big. I wear a 9, ordered 9 and they were huge.

Mine were not men's. Did you put the orthopedic supports that come with them inside them? I did. When I put the supports inside, they fit. Without supports, they were loose, but still wearable. I normally wear a size 9 shoe.