Why Shouldn't I?

The speaker is wondering whether to take a chance on romance instead of letting it pass by. The mood is curious and hopeful, with a playful confidence: love is presented as something worth experiencing, and the speaker seems ready to find out for themself.

The repeated question “Why shouldn’t I?” is a rhetorical question: the speaker does not expect a strong reason to hold back. “When romance passes by” makes romance sound like an opportunity that might not wait. The idea that “the hour is coming” when someone will be kissed gives love a sense of anticipation. References to debutantes and film stars suggest that people admired by the speaker appear to enjoy romance, though this may be playful persuasion rather than evidence.

The lyrics make love sound both important and fun, but they do not describe a particular relationship or promise that romance will bring lasting happiness. The speaker’s reasoning is partly sincere and partly lighthearted: other people seem to try love, so why not join them? The song leaves open whether this is a considered choice or simply an eager response to the excitement of possibility.