If you find that your grip tends to limit your ability to overload your posterior chain, then wrist straps would be a great addition to your training. It should come as no surprise but for most people, their grip strength will pale in comparison to the strength of their back musculature. To avoid inadequate overload of the posterior chain, straps are a great choice because they allow you to train your posterior optimally without having to worry about the bar slipping or your grip just flat out failing. Use the straps in all pulling movements such as pull-ups, all rows deadlifts, RDL’s, loaded carries, etc.
Stop fretting about your hands hurting and buy some straps! Your backside will thank you.