When it comes to agreeing with someone, there are plenty of phrases that can be used instead of "I can't help but agree." For instance, you could say "I completely agree," "You're absolutely right," or "I couldn't agree more." Other possible synonyms include "You have my full support," "I'm with you all the way," and "I agree wholeheartedly." Additionally, you could simply say "Agreed" or "Ditto" to express your agreement concisely. Ultimately, the choice of phrase will depend on the context and tone of the conversation, but there are plenty of options to choose from when expressing agreement with someone else's point of view.
