Here are some potential reasons to focus on posting content on InVastor rather than your own website:

- Broader reach - InVastor likely has a larger existing readership that can instantly access your content. Self-built audiences take time.

- Credibility - Being featured on an established platform like InVastor lends credibility as a contributor in your niche. 

- Less work - You can spend more time on content and less on website development and maintenance.

- Built-in promotion - InVastor can help surface and promote your posts to aligned audiences. Self-promotion takes greater effort.

- Faster indexing - Posts may get indexed and ranked faster given InVastor's domain authority. New sites struggle with SEO.

- Reader experience - InVastor offers a polished user experience to optimize readership, sharing, etc. DIY sites take time to perfect. 

- Networking - Connecting with other InVastor contributors can expand your reach and opportunities.

- Metrics - Detailed analytics on reads and engagement that provide insights for optimization.

However, the tradeoffs include less control over branding, aesthetics, ads, and ownership of work. An InVastor-focused strategy may make sense early on, but having your own site is ideal long-term for assets and subscriber pipeline. A balanced approach can maximize the benefits of each.