I get "the itch" on just about every opiate I've tried. It goes away with time...well not totally. I didn't itch as much in the later days of my usage but I could use it as a gauge. Basically more itch = better high.
Like others, I've come to enjoy it over the years and you might as well. Some people find it too much to deal with though, and take something to prevent it. Even as someone that enjoyed the itch there were times during my use where it was so intense that I'd scratch myself raw. I did that to my ankle once and it took a good month to heal up.
It depends on the person and their tolerance for sure. Remember, Xmg of your opiate of choice is going to have a different effect for you than it does everyone else. Everyone is different, know your body, know your mind, and take what you need to reach desired effects based on that.
Not to preach to you but: As someone that's used these for years I'll go ahead and advise you not to make it a regular thing. Be very careful with opiates, they have a way of tricking you into using them, and then once they get those claws in you it stops begin fun and with time will take over almost every aspect of your life. Be safe out there!