A proverb meaning 'going is pleasant but returning is scary' — used when the outward journey is easy or enjoyable but the return is risky or worrisome (from the Edo-era children's song 'Tōryanse').
行きはよいよい帰りは怖いと言って、暗くなる前に家に帰ろう。
As the proverb says 'going is fine, returning is scary,' let's get home before it gets dark.
山登りは行きはよいよい帰りは怖いになることがあるので、装備はしっかり準備した方がいい。
Mountain climbing can be 'easy going, scary returning,' so it's better to prepare your gear thoroughly.