@Kriszti, you're never going to be the parent you ideally want to be, because life is imperfect and everyone makes mistakes. People who are completely debilitated by medical conditions in some cases have children who go on to have healthy, happy lives!
I wouldn't actively encourage or discourage anyone from having kids; it's an incredibly personal decision which is going to alter every part of the rest of your life, no matter how it plays out.
I will say that I was ~7 years into my worsened, spiked tinnitus when we decided to have our first child. The concept that I was never going to hear my child speak without it being set against the backdrop of tinnitus was depressing, but I had wanted kids for a long time and so the idea of giving that up because of, basically, a stupid physical defect was a lot
more depressing.
So, do whatever you want, but I am one of several parents I know who have moderate to bad tinnitus, and I bet all of us would agree that tinnitus is a challenge which makes parenting more difficult, but also that it's so far from the biggest challenge of parenting for us that it stops figuring into the equation pretty past (and I'm someone who has been functionally impaired by this condition to varying degrees since 2001).
One takeaway for me from having a child: none of my own stuff seems as important anymore. That doesn't mean tinnitus isn't still painfully unpleasant -- it often is! But somehow -- it took a procedural and emotional back seat to some extent as soon as kiddo was in the picture, because common tinnitus triggers like "oh I only slept for 2 hours last night" just become a routine part of life. I thought that was going to be really difficult and traumatizing but actually that whole period passed in an insane blur and I was barely aware of my tinnitus at all for about the first 3-4 months. (This was before I was on any medication, too).