Admin, my issue is a weird one, I am crippled

Admin, my issue is a weird one, I am crippled , on a wheel chair, my legs got cut in an accident I had 2009, the incident rendered me sterile, I can't even rise. I got married 1998, I have 4 boys and a girl. The hospital have done their best, no way. I am not complaining because I am alive , and that is one big testimony .

I married my wife when she was 23years old, I trained her in university and masters. In fact she runs my businesses now. Sometimes I loose hope of living, sometimes I look at my children and feel so grateful to God almighty . 

Madam, I know my wife is cheating, I have seen many evidence showing she has someone who satisfies her sexual urges, I can't help her, so I feel pity for her, what am not sure of is, how many men she is dating.

I love my wife and I can't let her go or divorce her because honestly, she is a great person, she takes care of me, since this my condition, she has never stop encouraging me, she baths me, clothes me, takes me to hospital for check up, even when I feel terrible about my situation, she holds my hands and give me hope. Even my siblings can't do what she is doing for me.

Where I can't meet her sexual needs, I can't be jealous that she is seeing someone. I am 54years old . Is my decision on this right or wrong or should I call her to order. Thank you .