There's absolutely no reason for you to feel ashamed about this situation. People have different ways of expressing affection and comfort in relationships, and what matters most is that both you and your wife are comfortable with the arrangement. If you feel happy and loved in your wife's arms, and it's a consensual and enjoyable experience for both of you, then there's no problem at all.
It's important to remember that there is no "normal" or "right" way for couples to interact in private, as long as both partners are consenting adults and are happy with the dynamics of their relationship. Embracing vulnerability and showing affection can strengthen the bond between partners and enhance emotional intimacy.
However, if you ever feel uncomfortable or if this dynamic causes any issues or concerns in your relationship, it's essential to have open and honest communication with your wife about your feelings. Being able to talk openly about your needs and boundaries is crucial in any healthy relationship.
Ultimately, what matters most is the mutual love, respect, and understanding you have for each other. As long as you both find joy and comfort in your relationship, there is no need to feel ashamed about it.